161158415 has 8 divisors (see below), whose sum is σ = 210971088. Its totient is φ = 117206080.

The previous prime is 161158409. The next prime is 161158433. The reversal of 161158415 is 514851161.

161158415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-161158415 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1465022 + ... + 1465131.

It is an arithmetic number, because the mean of its divisors is an integer number (26371386).

Almost surely, 2^161158415 is an apocalyptic number.

161158415 is a deficient number, since it is larger than the sum of its proper divisors (49812673).

161158415 is a wasteful number, since it uses less digits than its factorization.

161158415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930169.

The product of its digits is 4800, while the sum is 32.

The square root of 161158415 is about 12694.8184311553. The cubic root of 161158415 is about 544.1905499121.

The spelling of 161158415 in words is "one hundred sixty-one million, one hundred fifty-eight thousand, four hundred fifteen".