1313252890 has 16 divisors (see below), whose sum is σ = 2502905832. Its totient is φ = 494401024.

The previous prime is 1313252821. The next prime is 1313252893. The reversal of 1313252890 is 982523131.

It can be written as a sum of positive squares in 4 ways, for example, as 1148464321 + 164788569 = 33889^2 + 12837^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1313252893) 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, 3862339 + ... + 3862678.

Almost surely, 2^1313252890 is an apocalyptic number.

1313252890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313252890 is a deficient number, since it is larger than the sum of its proper divisors (1189652942).

1313252890 is a wasteful number, since it uses less digits than its factorization.

1313252890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725041.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1313252890 is about 36238.8312449505. The cubic root of 1313252890 is about 1095.0890970919.

The spelling of 1313252890 in words is "one billion, three hundred thirteen million, two hundred fifty-two thousand, eight hundred ninety".