1646797955 has 8 divisors (see below), whose sum is σ = 2155808304. Its totient is φ = 1197671200.

The previous prime is 1646797931. The next prime is 1646797969. The reversal of 1646797955 is 5597976461.

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

It is not a de Polignac number, because 1646797955 - 2²⁴ = 1630020739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1646797894 and 1646797903.

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, 14970836 + ... + 14970945.

It is an arithmetic number, because the mean of its divisors is an integer number (269476038).

Almost surely, 2^1646797955 is an apocalyptic number.

1646797955 is a deficient number, since it is larger than the sum of its proper divisors (509010349).

1646797955 is a wasteful number, since it uses less digits than its factorization.

1646797955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29941797.

The product of its digits is 14288400, while the sum is 59.

The square root of 1646797955 is about 40580.7584330308. The cubic root of 1646797955 is about 1180.9008621499.

The spelling of 1646797955 in words is "one billion, six hundred forty-six million, seven hundred ninety-seven thousand, nine hundred fifty-five".