154163640 has 64 divisors (see below), whose sum is σ = 466624800. Its totient is φ = 40742912.

The previous prime is 154163629. The next prime is 154163657. The reversal of 154163640 is 46361451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 154163598 and 154163607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7876 + ... + 19244.

Almost surely, 2^154163640 is an apocalyptic number.

154163640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154163640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233312400).

154163640 is an abundant number, since it is smaller than the sum of its proper divisors (312461160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154163640 is a wasteful number, since it uses less digits than its factorization.

154163640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11496 (or 11492 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 154163640 is about 12416.2651389216. The cubic root of 154163640 is about 536.2006284657.

The spelling of 154163640 in words is "one hundred fifty-four million, one hundred sixty-three thousand, six hundred forty".