1213973802 has 24 divisors (see below), whose sum is σ = 2768712960. Its totient is φ = 383360040.

The previous prime is 1213973779. The next prime is 1213973861. The reversal of 1213973802 is 2083793121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1774474 + ... + 1775157.

It is an arithmetic number, because the mean of its divisors is an integer number (115363040).

Almost surely, 2^1213973802 is an apocalyptic number.

1213973802 is an abundant number, since it is smaller than the sum of its proper divisors (1554739158).

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

1213973802 is a wasteful number, since it uses less digits than its factorization.

1213973802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549658 (or 3549655 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1213973802 is about 34842.1268294575. The cubic root of 1213973802 is about 1066.7674888857.

The spelling of 1213973802 in words is "one billion, two hundred thirteen million, nine hundred seventy-three thousand, eight hundred two".