161392507 has 2 divisors, whose sum is σ = 161392508. Its totient is φ = 161392506.

The previous prime is 161392499. The next prime is 161392531. The reversal of 161392507 is 705293161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161392507 - 2³ = 161392499 is a prime.

It is equal to p_9048184 and since 161392507 and 9048184 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (161392537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80696253 + 80696254.

It is an arithmetic number, because the mean of its divisors is an integer number (80696254).

Almost surely, 2^161392507 is an apocalyptic number.

161392507 is a deficient number, since it is larger than the sum of its proper divisors (1).

161392507 is an equidigital number, since it uses as much as digits as its factorization.

161392507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 161392507 is about 12704.0350676468. The cubic root of 161392507 is about 544.4539119445.

The spelling of 161392507 in words is "one hundred sixty-one million, three hundred ninety-two thousand, five hundred seven".