1397146832 has 20 divisors (see below), whose sum is σ = 2772996996. Its totient is φ = 681534720.

The previous prime is 1397146813. The next prime is 1397146847. The reversal of 1397146832 is 2386417931.

It can be written as a sum of positive squares in 2 ways, for example, as 592630336 + 804516496 = 24344^2 + 28364^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1064243 + ... + 1065554.

Almost surely, 2^1397146832 is an apocalyptic number.

It is an amenable number.

1397146832 is a deficient number, since it is larger than the sum of its proper divisors (1375850164).

1397146832 is a wasteful number, since it uses less digits than its factorization.

1397146832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129846 (or 2129840 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 1397146832 is about 37378.4273612468. The cubic root of 1397146832 is about 1117.9284710750.

The spelling of 1397146832 in words is "one billion, three hundred ninety-seven million, one hundred forty-six thousand, eight hundred thirty-two".