1393811920770 has 16 divisors (see below), whose sum is σ = 3345148609920. Its totient is φ = 371683178864.

The previous prime is 1393811920637. The next prime is 1393811920819. The reversal of 1393811920770 is 770291183931.

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, 23230198650 + ... + 23230198709.

It is an arithmetic number, because the mean of its divisors is an integer number (209071788120).

Almost surely, 2^{1393811920770} is an apocalyptic number.

1393811920770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1393811920770 is an abundant number, since it is smaller than the sum of its proper divisors (1951336689150).

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

1393811920770 is a wasteful number, since it uses less digits than its factorization.

1393811920770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46460397369.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 1393811920770 in words is "one trillion, three hundred ninety-three billion, eight hundred eleven million, nine hundred twenty thousand, seven hundred seventy".