9901981470 has 32 divisors (see below), whose sum is σ = 23767460640. Its totient is φ = 2640227840.

The previous prime is 9901981429. The next prime is 9901981493. The reversal of 9901981470 is 741891099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408490 + ... + 432050.

It is an arithmetic number, because the mean of its divisors is an integer number (742733145).

Almost surely, 2^9901981470 is an apocalyptic number.

9901981470 is an abundant number, since it is smaller than the sum of its proper divisors (13865479170).

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

9901981470 is a wasteful number, since it uses less digits than its factorization.

9901981470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37580.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 9901981470 is about 99508.7004738782. The cubic root of 9901981470 is about 2147.3724143509.

The spelling of 9901981470 in words is "nine billion, nine hundred one million, nine hundred eighty-one thousand, four hundred seventy".