152969381 has 2 divisors, whose sum is σ = 152969382. Its totient is φ = 152969380.

The previous prime is 152969353. The next prime is 152969413. The reversal of 152969381 is 183969251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133033156 + 19936225 = 11534^2 + 4465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152969381 is a prime.

It is a super-2 number, since 2×152969381² = 46799263047046322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152969351) 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 as a sum of consecutive naturals, namely, 76484690 + 76484691.

It is an arithmetic number, because the mean of its divisors is an integer number (76484691).

Almost surely, 2^152969381 is an apocalyptic number.

It is an amenable number.

152969381 is a deficient number, since it is larger than the sum of its proper divisors (1).

152969381 is an equidigital number, since it uses as much as digits as its factorization.

152969381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 152969381 is about 12368.0791152062. The cubic root of 152969381 is about 534.8124430623.

The spelling of 152969381 in words is "one hundred fifty-two million, nine hundred sixty-nine thousand, three hundred eighty-one".