2147990481 has 128 divisors (see below), whose sum is σ = 4073287680. Its totient is φ = 1102248000.

The previous prime is 2147990437. The next prime is 2147990501. The reversal of 2147990481 is 1840997412.

It is a happy number.

2147990481 is a `hidden beast` number, since 2 + 14 + 79 + 90 + 481 = 666.

It is not a de Polignac number, because 2147990481 - 2¹³ = 2147982289 is a prime.

It is a super-2 number, since 2×2147990481² = 9227726212933222722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2147990431) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8557606 + ... + 8557856.

It is an arithmetic number, because the mean of its divisors is an integer number (31822560).

Almost surely, 2^2147990481 is an apocalyptic number.

2147990481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2147990481 is a deficient number, since it is larger than the sum of its proper divisors (1925297199).

2147990481 is an equidigital number, since it uses as much as digits as its factorization.

2147990481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 2147990481 is about 46346.4182111196. The cubic root of 2147990481 is about 1290.2606450074.

The spelling of 2147990481 in words is "two billion, one hundred forty-seven million, nine hundred ninety thousand, four hundred eighty-one".