1397375898 has 16 divisors (see below), whose sum is σ = 2796792096. Its totient is φ = 465451920.

The previous prime is 1397375897. The next prime is 1397375909. The reversal of 1397375898 is 8985737931.

It is a super-2 number, since 2×1397375898² = 3905318800622612808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1397375897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76036 + ... + 92607.

It is an arithmetic number, because the mean of its divisors is an integer number (174799506).

Almost surely, 2^1397375898 is an apocalyptic number.

1397375898 is an abundant number, since it is smaller than the sum of its proper divisors (1399416198).

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

1397375898 is a wasteful number, since it uses less digits than its factorization.

1397375898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170029.

The product of its digits is 11430720, while the sum is 60.

The square root of 1397375898 is about 37381.4913827686. The cubic root of 1397375898 is about 1117.9895635347.

The spelling of 1397375898 in words is "one billion, three hundred ninety-seven million, three hundred seventy-five thousand, eight hundred ninety-eight".