1387183091 has 12 divisors (see below), whose sum is σ = 1629334512. Its totient is φ = 1177465968.

The previous prime is 1387183079. The next prime is 1387183097. The reversal of 1387183091 is 1903817831.

It is not a de Polignac number, because 1387183091 - 2³⁰ = 313441267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387183097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132380 + ... + 142473.

It is an arithmetic number, because the mean of its divisors is an integer number (135777876).

Almost surely, 2^1387183091 is an apocalyptic number.

1387183091 is a deficient number, since it is larger than the sum of its proper divisors (242151421).

1387183091 is a wasteful number, since it uses less digits than its factorization.

1387183091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274970 (or 274963 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1387183091 is about 37244.9069135634. The cubic root of 1387183091 is about 1115.2646294209.

The spelling of 1387183091 in words is "one billion, three hundred eighty-seven million, one hundred eighty-three thousand, ninety-one".