1401974920 has 16 divisors (see below), whose sum is σ = 3154443660. Its totient is φ = 560789952.

The previous prime is 1401974897. The next prime is 1401974923. The reversal of 1401974920 is 294791041.

It can be written as a sum of positive squares in 2 ways, for example, as 1249056964 + 152917956 = 35342^2 + 12366^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1401974920.

It is not an unprimeable number, because it can be changed into a prime (1401974923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17524647 + ... + 17524726.

Almost surely, 2^1401974920 is an apocalyptic number.

1401974920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401974920 is an abundant number, since it is smaller than the sum of its proper divisors (1752468740).

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

1401974920 is a wasteful number, since it uses less digits than its factorization.

1401974920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35049384 (or 35049380 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1401974920 is about 37442.9555457365. The cubic root of 1401974920 is about 1119.2147237752.

The spelling of 1401974920 in words is "one billion, four hundred one million, nine hundred seventy-four thousand, nine hundred twenty".