1654133987 has 32 divisors (see below), whose sum is σ = 1963906560. Its totient is φ = 1377376000.

The previous prime is 1654133981. The next prime is 1654134037. The reversal of 1654133987 is 7893314561.

It is a happy number.

It is not a de Polignac number, because 1654133987 - 2⁸ = 1654133731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1654133981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 960287 + ... + 962007.

It is an arithmetic number, because the mean of its divisors is an integer number (61372080).

Almost surely, 2^1654133987 is an apocalyptic number.

1654133987 is a deficient number, since it is larger than the sum of its proper divisors (309772573).

1654133987 is a wasteful number, since it uses less digits than its factorization.

1654133987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915.

The product of its digits is 544320, while the sum is 47.

The square root of 1654133987 is about 40671.0460524437. The cubic root of 1654133987 is about 1182.6517942706.

The spelling of 1654133987 in words is "one billion, six hundred fifty-four million, one hundred thirty-three thousand, nine hundred eighty-seven".