1318234645 has 24 divisors (see below), whose sum is σ = 1957637376. Its totient is φ = 834395328.

The previous prime is 1318234639. The next prime is 1318234651. The reversal of 1318234645 is 5464328131.

It is an interprime number because it is at equal distance from previous prime (1318234639) and next prime (1318234651).

It is not a de Polignac number, because 1318234645 - 2⁵ = 1318234613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105517 + ... + 117346.

It is an arithmetic number, because the mean of its divisors is an integer number (81568224).

Almost surely, 2^1318234645 is an apocalyptic number.

It is an amenable number.

1318234645 is a deficient number, since it is larger than the sum of its proper divisors (639402731).

1318234645 is a wasteful number, since it uses less digits than its factorization.

1318234645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222901 (or 222888 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 1318234645 is about 36307.5012221992. The cubic root of 1318234645 is about 1096.4720705690.

The spelling of 1318234645 in words is "one billion, three hundred eighteen million, two hundred thirty-four thousand, six hundred forty-five".