901049478 has 16 divisors (see below), whose sum is σ = 2059541760. Its totient is φ = 257442696.

The previous prime is 901049467. The next prime is 901049491. The reversal of 901049478 is 874940109.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 21453559 = 901049478 / (9 + 0 + 1 + 0 + 4 + 9 + 4 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10726738 + ... + 10726821.

It is an arithmetic number, because the mean of its divisors is an integer number (128721360).

Almost surely, 2^901049478 is an apocalyptic number.

901049478 is an abundant number, since it is smaller than the sum of its proper divisors (1158492282).

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

901049478 is a wasteful number, since it uses less digits than its factorization.

901049478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21453571.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 901049478 is about 30017.4862038779. The cubic root of 901049478 is about 965.8645202626.

The spelling of 901049478 in words is "nine hundred one million, forty-nine thousand, four hundred seventy-eight".