1308202090 has 32 divisors (see below), whose sum is σ = 2552731776. Its totient is φ = 479822400.

The previous prime is 1308202069. The next prime is 1308202099. The reversal of 1308202090 is 902028031.

It is a super-2 number, since 2×1308202090² = 3422785416560736200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1308202099) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13692 + ... + 52951.

It is an arithmetic number, because the mean of its divisors is an integer number (79772868).

Almost surely, 2^1308202090 is an apocalyptic number.

1308202090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1308202090 is a deficient number, since it is larger than the sum of its proper divisors (1244529686).

1308202090 is a wasteful number, since it uses less digits than its factorization.

1308202090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66814.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1308202090 is about 36169.0764327761. The cubic root of 1308202090 is about 1093.6833810200.

The spelling of 1308202090 in words is "one billion, three hundred eight million, two hundred two thousand, ninety".