1918362480 has 40 divisors (see below), whose sum is σ = 5946924432. Its totient is φ = 511563264.

The previous prime is 1918362473. The next prime is 1918362497. The reversal of 1918362480 is 842638191.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1918362480² = 7360229209343500800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3996349 + ... + 3996828.

Almost surely, 2^1918362480 is an apocalyptic number.

1918362480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1918362480 is an abundant number, since it is smaller than the sum of its proper divisors (4028561952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1918362480 is a wasteful number, since it uses less digits than its factorization.

1918362480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993193 (or 7993187 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1918362480 is about 43799.1150595534. The cubic root of 1918362480 is about 1242.5395577580.

The spelling of 1918362480 in words is "one billion, nine hundred eighteen million, three hundred sixty-two thousand, four hundred eighty".