1400918478 has 8 divisors (see below), whose sum is σ = 2801836968. Its totient is φ = 466972824.

The previous prime is 1400918459. The next prime is 1400918549. The reversal of 1400918478 is 8748190041.

It is a sphenic number, since it is the product of 3 distinct primes.

1400918478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116743201 + ... + 116743212.

It is an arithmetic number, because the mean of its divisors is an integer number (350229621).

Almost surely, 2^1400918478 is an apocalyptic number.

1400918478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1400918478 is a wasteful number, since it uses less digits than its factorization.

1400918478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233486418.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1400918478 is about 37428.8455338927. The cubic root of 1400918478 is about 1118.9335293592.

The spelling of 1400918478 in words is "one billion, four hundred million, nine hundred eighteen thousand, four hundred seventy-eight".