1913777494 has 4 divisors (see below), whose sum is σ = 2870666244. Its totient is φ = 956888746.

The previous prime is 1913777441. The next prime is 1913777519. The reversal of 1913777494 is 4947773191.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478444372 + ... + 478444375.

It is an arithmetic number, because the mean of its divisors is an integer number (717666561).

Almost surely, 2^1913777494 is an apocalyptic number.

1913777494 is a deficient number, since it is larger than the sum of its proper divisors (956888750).

1913777494 is an equidigital number, since it uses as much as digits as its factorization.

1913777494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956888749.

The product of its digits is 1333584, while the sum is 52.

The square root of 1913777494 is about 43746.7426673118. The cubic root of 1913777494 is about 1241.5488566953.

The spelling of 1913777494 in words is "one billion, nine hundred thirteen million, seven hundred seventy-seven thousand, four hundred ninety-four".