1313432658 has 20 divisors (see below), whose sum is σ = 2943062430. Its totient is φ = 437810832.

The previous prime is 1313432657. The next prime is 1313432677. The reversal of 1313432658 is 8562343131.

It can be written as a sum of positive squares in only one way, i.e., 1149413409 + 164019249 = 33903^2 + 12807^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1313432651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4053643 + ... + 4053966.

Almost surely, 2^1313432658 is an apocalyptic number.

1313432658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1313432658 is an abundant number, since it is smaller than the sum of its proper divisors (1629629772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313432658 is an equidigital number, since it uses as much as digits as its factorization.

1313432658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8107623 (or 8107614 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1313432658 is about 36241.3114828920. The cubic root of 1313432658 is about 1095.1390628415.

Adding to 1313432658 its reverse (8562343131), we get a palindrome (9875775789).

The spelling of 1313432658 in words is "one billion, three hundred thirteen million, four hundred thirty-two thousand, six hundred fifty-eight".