1213657794 has 48 divisors (see below), whose sum is σ = 2842831680. Its totient is φ = 372898080.

The previous prime is 1213657793. The next prime is 1213657807. The reversal of 1213657794 is 4977563121.

It is not an unprimeable number, because it can be changed into a prime (1213657793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35302 + ... + 60609.

It is an arithmetic number, because the mean of its divisors is an integer number (59225660).

Almost surely, 2^1213657794 is an apocalyptic number.

1213657794 is an abundant number, since it is smaller than the sum of its proper divisors (1629173886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213657794 is a wasteful number, since it uses less digits than its factorization.

1213657794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95975 (or 95972 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 1213657794 is about 34837.5916791043. The cubic root of 1213657794 is about 1066.6749178832.

The spelling of 1213657794 in words is "one billion, two hundred thirteen million, six hundred fifty-seven thousand, seven hundred ninety-four".