1379519091 has 6 divisors (see below), whose sum is σ = 1992638700. Its totient is φ = 919679388.

The previous prime is 1379519069. The next prime is 1379519131. The reversal of 1379519091 is 1909159731.

It is a happy number.

1379519091 is a `hidden beast` number, since 1 + 379 + 5 + 190 + 91 = 666.

1379519091 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1379519091 - 2⁵ = 1379519059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1379519021) 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, 76639941 + ... + 76639958.

It is an arithmetic number, because the mean of its divisors is an integer number (332106450).

Almost surely, 2^1379519091 is an apocalyptic number.

1379519091 is a deficient number, since it is larger than the sum of its proper divisors (613119609).

1379519091 is a wasteful number, since it uses less digits than its factorization.

1379519091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153279905 (or 153279902 counting only the distinct ones).

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

The square root of 1379519091 is about 37141.8778604421. The cubic root of 1379519091 is about 1113.2069395779.

The spelling of 1379519091 in words is "one billion, three hundred seventy-nine million, five hundred nineteen thousand, ninety-one".