1213375892 has 24 divisors (see below), whose sum is σ = 2247722400. Its totient is φ = 572142816.

The previous prime is 1213375883. The next prime is 1213375903. The reversal of 1213375892 is 2985733121.

It is a congruent number.

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, 116642 + ... + 126617.

It is an arithmetic number, because the mean of its divisors is an integer number (93655100).

Almost surely, 2^1213375892 is an apocalyptic number.

It is an amenable number.

1213375892 is a deficient number, since it is larger than the sum of its proper divisors (1034346508).

1213375892 is a wasteful number, since it uses less digits than its factorization.

1213375892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243335 (or 243333 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 1213375892 is about 34833.5454985564. The cubic root of 1213375892 is about 1066.5923242892.

The spelling of 1213375892 in words is "one billion, two hundred thirteen million, three hundred seventy-five thousand, eight hundred ninety-two".