1379554919 has 4 divisors (see below), whose sum is σ = 1380225696. Its totient is φ = 1378884144.

The previous prime is 1379554877. The next prime is 1379554937. The reversal of 1379554919 is 9194559731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1379554919 - 2⁸ = 1379554663 is a prime.

It is a super-2 number, since 2×1379554919² = 3806343549074193122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379554999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332294 + ... + 336419.

It is an arithmetic number, because the mean of its divisors is an integer number (345056424).

Almost surely, 2^1379554919 is an apocalyptic number.

1379554919 is a deficient number, since it is larger than the sum of its proper divisors (670777).

1379554919 is an equidigital number, since it uses as much as digits as its factorization.

1379554919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670776.

The product of its digits is 1530900, while the sum is 53.

The square root of 1379554919 is about 37142.3601700269. The cubic root of 1379554919 is about 1113.2165766640.

The spelling of 1379554919 in words is "one billion, three hundred seventy-nine million, five hundred fifty-four thousand, nine hundred nineteen".