1397131802 has 16 divisors (see below), whose sum is σ = 2293134624. Its totient is φ = 633138000.

The previous prime is 1397131793. The next prime is 1397131847. The reversal of 1397131802 is 2081317931.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88649 + ... + 103212.

It is an arithmetic number, because the mean of its divisors is an integer number (143320914).

Almost surely, 2^1397131802 is an apocalyptic number.

1397131802 is a deficient number, since it is larger than the sum of its proper divisors (896002822).

1397131802 is a wasteful number, since it uses less digits than its factorization.

1397131802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192205.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1397131802 is about 37378.2263089088. The cubic root of 1397131802 is about 1117.9244623040.

The spelling of 1397131802 in words is "one billion, three hundred ninety-seven million, one hundred thirty-one thousand, eight hundred two".