1641797404 has 12 divisors (see below), whose sum is σ = 3094156744. Its totient is φ = 757752624.

The previous prime is 1641797393. The next prime is 1641797419. The reversal of 1641797404 is 4047971461.

It is a super-2 number, since 2×1641797404² = 5390997431562278432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15786462 + ... + 15786565.

Almost surely, 2^1641797404 is an apocalyptic number.

It is an amenable number.

1641797404 is a deficient number, since it is larger than the sum of its proper divisors (1452359340).

1641797404 is a wasteful number, since it uses less digits than its factorization.

1641797404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31573044 (or 31573042 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1641797404 is about 40519.0992496131. The cubic root of 1641797404 is about 1179.7043700661.

The spelling of 1641797404 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, four hundred four".