165137474 has 8 divisors (see below), whose sum is σ = 260743440. Its totient is φ = 78222996.

The previous prime is 165137459. The next prime is 165137477. The reversal of 165137474 is 474731561.

165137474 is digitally balanced in base 2 and base 3, because in such bases 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 Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 4345723 = 165137474 / (1 + 6 + 5 + 1 + 3 + 7 + 4 + 7 + 4).

It is not an unprimeable number, because it can be changed into a prime (165137477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2172824 + ... + 2172899.

It is an arithmetic number, because the mean of its divisors is an integer number (32592930).

Almost surely, 2^165137474 is an apocalyptic number.

165137474 is a deficient number, since it is larger than the sum of its proper divisors (95605966).

165137474 is a wasteful number, since it uses less digits than its factorization.

165137474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345744.

The product of its digits is 70560, while the sum is 38.

The square root of 165137474 is about 12850.5826327058. The cubic root of 165137474 is about 548.6329398863.

The spelling of 165137474 in words is "one hundred sixty-five million, one hundred thirty-seven thousand, four hundred seventy-four".