1308344990 has 32 divisors (see below), whose sum is σ = 2496795840. Its totient is φ = 491912704.

The previous prime is 1308344981. The next prime is 1308345043. The reversal of 1308344990 is 994438031.

It is a super-2 number, since 2×1308344990² = 3423533225716200200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138044 + ... + 147216.

It is an arithmetic number, because the mean of its divisors is an integer number (78024870).

Almost surely, 2^1308344990 is an apocalyptic number.

1308344990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1308344990 is a deficient number, since it is larger than the sum of its proper divisors (1188450850).

1308344990 is a wasteful number, since it uses less digits than its factorization.

1308344990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10036.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1308344990 is about 36171.0518232467. The cubic root of 1308344990 is about 1093.7232019992.

The spelling of 1308344990 in words is "one billion, three hundred eight million, three hundred forty-four thousand, nine hundred ninety".