151609969 has 9 divisors (see below), whose sum is σ = 176462937. Its totient is φ = 129877524.

The previous prime is 151609963. The next prime is 151609993. The reversal of 151609969 is 969906151.

The square root of 151609969 is 12313.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 151609969 - 2⁵ = 151609937 is a prime.

It is a super-2 number, since 2×151609969² = 45971165400361922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151609963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85312 + ... + 87070.

It is an arithmetic number, because the mean of its divisors is an integer number (19606993).

Almost surely, 2^151609969 is an apocalyptic number.

151609969 is the 12313-rd square number.

151609969 is the 6157-th centered octagonal number.

It is an amenable number.

151609969 is a deficient number, since it is larger than the sum of its proper divisors (24852968).

151609969 is an frugal number, since it uses more digits than its factorization.

151609969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 1766 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 46.

The cubic root of 151609969 is about 533.2234653459.

The spelling of 151609969 in words is "one hundred fifty-one million, six hundred nine thousand, nine hundred sixty-nine".