1377720474 has 16 divisors (see below), whose sum is σ = 2967398112. Its totient is φ = 423913968.

The previous prime is 1377720469. The next prime is 1377720583. The reversal of 1377720474 is 4740277731.

It is a super-2 number, since 2×1377720474² = 3796227408957569352, 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, 8831464 + ... + 8831619.

It is an arithmetic number, because the mean of its divisors is an integer number (185462382).

Almost surely, 2^1377720474 is an apocalyptic number.

1377720474 is an abundant number, since it is smaller than the sum of its proper divisors (1589677638).

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

1377720474 is a wasteful number, since it uses less digits than its factorization.

1377720474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17663101.

The product of its (nonzero) digits is 230496, while the sum is 42.

The square root of 1377720474 is about 37117.6571728335. The cubic root of 1377720474 is about 1112.7229294277.

The spelling of 1377720474 in words is "one billion, three hundred seventy-seven million, seven hundred twenty thousand, four hundred seventy-four".