1308137479 has 32 divisors (see below), whose sum is σ = 1555142400. Its totient is φ = 1087395840.

The previous prime is 1308137477. The next prime is 1308137491. The reversal of 1308137479 is 9747318031.

It is not a de Polignac number, because 1308137479 - 2¹ = 1308137477 is a prime.

It is a super-2 number, since 2×1308137479² = 3422447327928950882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308137477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1074279 + ... + 1075495.

It is an arithmetic number, because the mean of its divisors is an integer number (48598200).

Almost surely, 2^1308137479 is an apocalyptic number.

1308137479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1308137479 is a deficient number, since it is larger than the sum of its proper divisors (247004921).

1308137479 is a wasteful number, since it uses less digits than its factorization.

1308137479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 1308137479 is about 36168.1832416283. The cubic root of 1308137479 is about 1093.6653753563.

The spelling of 1308137479 in words is "one billion, three hundred eight million, one hundred thirty-seven thousand, four hundred seventy-nine".