1401974478 has 24 divisors (see below), whose sum is σ = 3050330400. Its totient is φ = 465368064.

The previous prime is 1401974467. The next prime is 1401974491. The reversal of 1401974478 is 8744791041.

It is a happy number.

1401974478 is a `hidden beast` number, since 14 + 0 + 197 + 447 + 8 = 666.

1401974478 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 158643 + ... + 167246.

It is an arithmetic number, because the mean of its divisors is an integer number (127097100).

Almost surely, 2^1401974478 is an apocalyptic number.

1401974478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1401974478 is an abundant number, since it is smaller than the sum of its proper divisors (1648355922).

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

1401974478 is a wasteful number, since it uses less digits than its factorization.

1401974478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326136 (or 326133 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1401974478 is about 37442.9496434242. The cubic root of 1401974478 is about 1119.2146061571.

The spelling of 1401974478 in words is "one billion, four hundred one million, nine hundred seventy-four thousand, four hundred seventy-eight".