1397849674 has 32 divisors (see below), whose sum is σ = 2277316944. Its totient is φ = 639690240.

The previous prime is 1397849671. The next prime is 1397849689. The reversal of 1397849674 is 4769487931.

It can be written as a sum of positive squares in 8 ways, for example, as 739568025 + 658281649 = 27195^2 + 25657^2 .

It is a super-2 number, since 2×1397849674² = 3907967422203812552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1397849671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2140332 + ... + 2140984.

Almost surely, 2^1397849674 is an apocalyptic number.

1397849674 is a deficient number, since it is larger than the sum of its proper divisors (879467270).

1397849674 is a wasteful number, since it uses less digits than its factorization.

1397849674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242.

The product of its digits is 9144576, while the sum is 58.

The square root of 1397849674 is about 37387.8278855566. The cubic root of 1397849674 is about 1118.1158995654.

The spelling of 1397849674 in words is "one billion, three hundred ninety-seven million, eight hundred forty-nine thousand, six hundred seventy-four".