1154422621 has 16 divisors (see below), whose sum is σ = 1355323968. Its totient is φ = 971539200.

The previous prime is 1154422603. The next prime is 1154422639. The reversal of 1154422621 is 1262244511.

It is an interprime number because it is at equal distance from previous prime (1154422603) and next prime (1154422639).

It is a cyclic number.

It is not a de Polignac number, because 1154422621 - 2⁹ = 1154422109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1154422621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154422651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39195 + ... + 62008.

It is an arithmetic number, because the mean of its divisors is an integer number (84707748).

Almost surely, 2^1154422621 is an apocalyptic number.

1154422621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1154422621 is a deficient number, since it is larger than the sum of its proper divisors (200901347).

1154422621 is a wasteful number, since it uses less digits than its factorization.

1154422621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101292.

The product of its digits is 3840, while the sum is 28.

The square root of 1154422621 is about 33976.7953315200. The cubic root of 1154422621 is about 1049.0308884360.

The spelling of 1154422621 in words is "one billion, one hundred fifty-four million, four hundred twenty-two thousand, six hundred twenty-one".