151972769 has 8 divisors (see below), whose sum is σ = 163941120. Its totient is φ = 140044176.

The previous prime is 151972763. The next prime is 151972771. The reversal of 151972769 is 967279151.

151972769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151972769 is a prime.

It is a super-2 number, since 2×151972769² = 46191445035054722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151972763) 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, 1739 + ... + 17520.

It is an arithmetic number, because the mean of its divisors is an integer number (20492640).

Almost surely, 2^151972769 is an apocalyptic number.

It is an amenable number.

151972769 is a deficient number, since it is larger than the sum of its proper divisors (11968351).

151972769 is a wasteful number, since it uses less digits than its factorization.

151972769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19879.

The product of its digits is 238140, while the sum is 47.

The square root of 151972769 is about 12327.7235935918. The cubic root of 151972769 is about 533.6484579966.

The spelling of 151972769 in words is "one hundred fifty-one million, nine hundred seventy-two thousand, seven hundred sixty-nine".