1901405472 has 24 divisors (see below), whose sum is σ = 4991189616. Its totient is φ = 633801792.

The previous prime is 1901405453. The next prime is 1901405509. The reversal of 1901405472 is 2745041091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9903058 + ... + 9903249.

It is an arithmetic number, because the mean of its divisors is an integer number (207966234).

Almost surely, 2^1901405472 is an apocalyptic number.

1901405472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1901405472 is an abundant number, since it is smaller than the sum of its proper divisors (3089784144).

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

1901405472 is a wasteful number, since it uses less digits than its factorization.

1901405472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19806320 (or 19806312 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1901405472 is about 43605.1083245989. The cubic root of 1901405472 is about 1238.8676516694.

The spelling of 1901405472 in words is "one billion, nine hundred one million, four hundred five thousand, four hundred seventy-two".