1914979397400 has 144 divisors (see below), whose sum is σ = 6710754033360. Its totient is φ = 488458502400.

The previous prime is 1914979397399. The next prime is 1914979397431. The reversal of 1914979397400 is 47939794191.

1914979397400 is a `hidden beast` number, since 1 + 91 + 49 + 79 + 39 + 7 + 400 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23086371 + ... + 23169170.

It is an arithmetic number, because the mean of its divisors is an integer number (46602458565).

Almost surely, 2^{1914979397400} is an apocalyptic number.

1914979397400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1914979397400 is an abundant number, since it is smaller than the sum of its proper divisors (4795774635960).

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

1914979397400 is a wasteful number, since it uses less digits than its factorization.

1914979397400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46255586 (or 46255574 counting only the distinct ones).

The product of its (nonzero) digits is 15431472, while the sum is 63.

The spelling of 1914979397400 in words is "one trillion, nine hundred fourteen billion, nine hundred seventy-nine million, three hundred ninety-seven thousand, four hundred".