161362987 has 2 divisors, whose sum is σ = 161362988. Its totient is φ = 161362986.

The previous prime is 161362969. The next prime is 161363017. The reversal of 161362987 is 789263161.

161362987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161362987 is a prime.

It is not a weakly prime, because it can be changed into another prime (161362087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80681493 + 80681494.

It is an arithmetic number, because the mean of its divisors is an integer number (80681494).

Almost surely, 2^161362987 is an apocalyptic number.

161362987 is a deficient number, since it is larger than the sum of its proper divisors (1).

161362987 is an equidigital number, since it uses as much as digits as its factorization.

161362987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 161362987 is about 12702.8731789308. The cubic root of 161362987 is about 544.4207149067.

The spelling of 161362987 in words is "one hundred sixty-one million, three hundred sixty-two thousand, nine hundred eighty-seven".