1313139450 has 48 divisors (see below), whose sum is σ = 3721815360. Its totient is φ = 300145920.

The previous prime is 1313139427. The next prime is 1313139463. The reversal of 1313139450 is 549313131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 624255 + ... + 626354.

It is an arithmetic number, because the mean of its divisors is an integer number (77537820).

Almost surely, 2^1313139450 is an apocalyptic number.

1313139450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313139450 is an abundant number, since it is smaller than the sum of its proper divisors (2408675910).

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

1313139450 is a wasteful number, since it uses less digits than its factorization.

1313139450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250631 (or 1250626 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 1313139450 is about 36237.2660392585. The cubic root of 1313139450 is about 1095.0575645808.

The spelling of 1313139450 in words is "one billion, three hundred thirteen million, one hundred thirty-nine thousand, four hundred fifty".