151979769 has 6 divisors (see below), whose sum is σ = 219526346. Its totient is φ = 101319840.

The previous prime is 151979761. The next prime is 151979783. The reversal of 151979769 is 967979151.

It is a happy number.

151979769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 149157369 + 2822400 = 12213^2 + 1680^2 .

It is not a de Polignac number, because 151979769 - 2³ = 151979761 is a prime.

It is a super-2 number, since 2×151979769² = 46195700370586722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151979761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8443312 + ... + 8443329.

Almost surely, 2^151979769 is an apocalyptic number.

It is an amenable number.

151979769 is a deficient number, since it is larger than the sum of its proper divisors (67546577).

151979769 is a wasteful number, since it uses less digits than its factorization.

151979769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16886647 (or 16886644 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 54.

The square root of 151979769 is about 12328.0075032424. The cubic root of 151979769 is about 533.6566513106.

The spelling of 151979769 in words is "one hundred fifty-one million, nine hundred seventy-nine thousand, seven hundred sixty-nine".