1397772458 has 16 divisors (see below), whose sum is σ = 2173461984. Its totient is φ = 673638480.

The previous prime is 1397772443. The next prime is 1397772469. The reversal of 1397772458 is 8542777931.

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, 80348 + ... + 96183.

It is an arithmetic number, because the mean of its divisors is an integer number (135841374).

Almost surely, 2^1397772458 is an apocalyptic number.

1397772458 is a deficient number, since it is larger than the sum of its proper divisors (775689526).

1397772458 is a wasteful number, since it uses less digits than its factorization.

1397772458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176677.

The product of its digits is 2963520, while the sum is 53.

The square root of 1397772458 is about 37386.7952357514. The cubic root of 1397772458 is about 1118.0953112698.

The spelling of 1397772458 in words is "one billion, three hundred ninety-seven million, seven hundred seventy-two thousand, four hundred fifty-eight".