1421867718 has 24 divisors (see below), whose sum is σ = 3088047456. Its totient is φ = 472827600.

The previous prime is 1421867653. The next prime is 1421867761. The reversal of 1421867718 is 8177681241.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86238 + ... + 101393.

It is an arithmetic number, because the mean of its divisors is an integer number (128668644).

Almost surely, 2^1421867718 is an apocalyptic number.

1421867718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1421867718 is an abundant number, since it is smaller than the sum of its proper divisors (1666179738).

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

1421867718 is a wasteful number, since it uses less digits than its factorization.

1421867718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188060 (or 188057 counting only the distinct ones).

The product of its digits is 150528, while the sum is 45.

The square root of 1421867718 is about 37707.6612639925. The cubic root of 1421867718 is about 1124.4834416667.

The spelling of 1421867718 in words is "one billion, four hundred twenty-one million, eight hundred sixty-seven thousand, seven hundred eighteen".