154161940 has 24 divisors (see below), whose sum is σ = 325890432. Its totient is φ = 61255200.

The previous prime is 154161937. The next prime is 154161947. The reversal of 154161940 is 49161451.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154161947) 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, 22504 + ... + 28543.

It is an arithmetic number, because the mean of its divisors is an integer number (13578768).

Almost surely, 2^154161940 is an apocalyptic number.

154161940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154161940 is an abundant number, since it is smaller than the sum of its proper divisors (171728492).

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

154161940 is a wasteful number, since it uses less digits than its factorization.

154161940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51207 (or 51205 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 154161940 is about 12416.1966801432. The cubic root of 154161940 is about 536.1986575202.

The spelling of 154161940 in words is "one hundred fifty-four million, one hundred sixty-one thousand, nine hundred forty".