1601620346 has 4 divisors (see below), whose sum is σ = 2402430522. Its totient is φ = 800810172.

The previous prime is 1601620309. The next prime is 1601620357. The reversal of 1601620346 is 6430261061.

It is a happy number.

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., 1317327025 + 284293321 = 36295^2 + 16861^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400405085 + ... + 400405088.

Almost surely, 2^1601620346 is an apocalyptic number.

1601620346 is a deficient number, since it is larger than the sum of its proper divisors (800810176).

1601620346 is an equidigital number, since it uses as much as digits as its factorization.

1601620346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800810175.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1601620346 is about 40020.2491996239. The cubic root of 1601620346 is about 1170.0017887814.

The spelling of 1601620346 in words is "one billion, six hundred one million, six hundred twenty thousand, three hundred forty-six".