813413770 has 16 divisors (see below), whose sum is σ = 1576771560. Its totient is φ = 300337344.

The previous prime is 813413761. The next prime is 813413789. The reversal of 813413770 is 77314318.

It can be written as a sum of positive squares in 4 ways, for example, as 304956369 + 508457401 = 17463^2 + 22549^2 .

It is a super-2 number, since 2×813413770² = 1323283922451225800, which contains 22 as substring.

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, 3128385 + ... + 3128644.

Almost surely, 2^813413770 is an apocalyptic number.

813413770 is a deficient number, since it is larger than the sum of its proper divisors (763357790).

813413770 is a wasteful number, since it uses less digits than its factorization.

813413770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257049.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 813413770 is about 28520.4097095396. The cubic root of 813413770 is about 933.4774690947.

It can be divided in two parts, 8134 and 13770, that added together give a square (21904 = 148²).

The spelling of 813413770 in words is "eight hundred thirteen million, four hundred thirteen thousand, seven hundred seventy".