1369731456 has 48 divisors (see below), whose sum is σ = 3941548260. Its totient is φ = 456576768.

The previous prime is 1369731439. The next prime is 1369731457. The reversal of 1369731456 is 6541379631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369731457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 593350 + ... + 595653.

Almost surely, 2^1369731456 is an apocalyptic number.

1369731456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1369731456 is an abundant number, since it is smaller than the sum of its proper divisors (2571816804).

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

1369731456 is a wasteful number, since it uses less digits than its factorization.

1369731456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189023 (or 1189008 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 1369731456 is about 37009.8832205669. The cubic root of 1369731456 is about 1110.5679684004.

The spelling of 1369731456 in words is "one billion, three hundred sixty-nine million, seven hundred thirty-one thousand, four hundred fifty-six".