1308319690 has 16 divisors (see below), whose sum is σ = 2394891360. Its totient is φ = 514457680.

The previous prime is 1308319673. The next prime is 1308319703. The reversal of 1308319690 is 969138031.

It is a super-2 number, since 2×1308319690² = 3423400822483392200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108156 + ... + 1109335.

It is an arithmetic number, because the mean of its divisors is an integer number (149680710).

Almost surely, 2^1308319690 is an apocalyptic number.

1308319690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1308319690 is a deficient number, since it is larger than the sum of its proper divisors (1086571670).

1308319690 is a wasteful number, since it uses less digits than its factorization.

1308319690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217557.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1308319690 is about 36170.7020943747. The cubic root of 1308319690 is about 1093.7161520301.

The spelling of 1308319690 in words is "one billion, three hundred eight million, three hundred nineteen thousand, six hundred ninety".