1620160474 has 4 divisors (see below), whose sum is σ = 2430240714. Its totient is φ = 810080236.

The previous prime is 1620160459. The next prime is 1620160481. The reversal of 1620160474 is 4740610261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1447422025 + 172738449 = 38045^2 + 13143^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405040117 + ... + 405040120.

Almost surely, 2^1620160474 is an apocalyptic number.

1620160474 is a deficient number, since it is larger than the sum of its proper divisors (810080240).

1620160474 is an equidigital number, since it uses as much as digits as its factorization.

1620160474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810080239.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1620160474 is about 40251.2170499229. The cubic root of 1620160474 is about 1174.4990709758.

The spelling of 1620160474 in words is "one billion, six hundred twenty million, one hundred sixty thousand, four hundred seventy-four".