1307889136 has 10 divisors (see below), whose sum is σ = 2534035232. Its totient is φ = 653944560.

The previous prime is 1307889131. The next prime is 1307889137. The reversal of 1307889136 is 6319887031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307889131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40871520 + ... + 40871551.

Almost surely, 2^1307889136 is an apocalyptic number.

1307889136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1307889136 is a deficient number, since it is larger than the sum of its proper divisors (1226146096).

1307889136 is an equidigital number, since it uses as much as digits as its factorization.

1307889136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81743079 (or 81743073 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1307889136 is about 36164.7499092694. The cubic root of 1307889136 is about 1093.5961621087.

The spelling of 1307889136 in words is "one billion, three hundred seven million, eight hundred eighty-nine thousand, one hundred thirty-six".