154661413 has 8 divisors (see below), whose sum is σ = 157411800. Its totient is φ = 151918080.

The previous prime is 154661371. The next prime is 154661459. The reversal of 154661413 is 314166451.

It can be written as a sum of positive squares in 4 ways, for example, as 55100929 + 99560484 = 7423^2 + 9978^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154661413 - 2²¹ = 152564261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154661113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62781 + ... + 65197.

It is an arithmetic number, because the mean of its divisors is an integer number (19676475).

Almost surely, 2^154661413 is an apocalyptic number.

It is an amenable number.

154661413 is a deficient number, since it is larger than the sum of its proper divisors (2750387).

154661413 is a wasteful number, since it uses less digits than its factorization.

154661413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527.

The product of its digits is 8640, while the sum is 31.

The square root of 154661413 is about 12436.2941827540. The cubic root of 154661413 is about 536.7771142526. Note that the first 3 decimals are identical.

The spelling of 154661413 in words is "one hundred fifty-four million, six hundred sixty-one thousand, four hundred thirteen".