151040981 has 24 divisors (see below), whose sum is σ = 192094560. Its totient is φ = 117688032.

The previous prime is 151040963. The next prime is 151040987. The reversal of 151040981 is 189040151.

It is not a de Polignac number, because 151040981 - 2⁶ = 151040917 is a prime.

It is a super-2 number, since 2×151040981² = 45626755882884722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151040987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40910 + ... + 44448.

It is an arithmetic number, because the mean of its divisors is an integer number (8003940).

Almost surely, 2^151040981 is an apocalyptic number.

It is an amenable number.

151040981 is a deficient number, since it is larger than the sum of its proper divisors (41053579).

151040981 is a wasteful number, since it uses less digits than its factorization.

151040981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633 (or 3626 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 151040981 is about 12289.8731075630. The cubic root of 151040981 is about 532.5555715035. Note that the first 4 decimals are identical.

The spelling of 151040981 in words is "one hundred fifty-one million, forty thousand, nine hundred eighty-one".