1370159991 has 6 divisors (see below), whose sum is σ = 1979120000. Its totient is φ = 913439988.

The previous prime is 1370159971. The next prime is 1370160007. The reversal of 1370159991 is 1999510731.

It is a happy number.

It is not a de Polignac number, because 1370159991 - 2²² = 1365965687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370159911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76119991 + ... + 76120008.

Almost surely, 2^1370159991 is an apocalyptic number.

1370159991 is a deficient number, since it is larger than the sum of its proper divisors (608960009).

1370159991 is a wasteful number, since it uses less digits than its factorization.

1370159991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152240005 (or 152240002 counting only the distinct ones).

The product of its (nonzero) digits is 76545, while the sum is 45.

The square root of 1370159991 is about 37015.6722348791. The cubic root of 1370159991 is about 1110.6837739765.

The spelling of 1370159991 in words is "one billion, three hundred seventy million, one hundred fifty-nine thousand, nine hundred ninety-one".