161182045 has 16 divisors (see below), whose sum is σ = 202475520. Its totient is φ = 122943744.

The previous prime is 161182033. The next prime is 161182057. The reversal of 161182045 is 540281161.

It is an interprime number because it is at equal distance from previous prime (161182033) and next prime (161182057).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161182045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36676 + ... + 40834.

It is an arithmetic number, because the mean of its divisors is an integer number (12654720).

Almost surely, 2^161182045 is an apocalyptic number.

It is an amenable number.

161182045 is a deficient number, since it is larger than the sum of its proper divisors (41293475).

161182045 is a wasteful number, since it uses less digits than its factorization.

161182045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 161182045 is about 12695.7490917236. The cubic root of 161182045 is about 544.2171460913.

The spelling of 161182045 in words is "one hundred sixty-one million, one hundred eighty-two thousand, forty-five".