2902049581 has 2 divisors, whose sum is σ = 2902049582. Its totient is φ = 2902049580.

The previous prime is 2902049543. The next prime is 2902049603. The reversal of 2902049581 is 1859402092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1950635556 + 951414025 = 44166^2 + 30845^2 .

It is a cyclic number.

It is not a de Polignac number, because 2902049581 - 2¹⁹ = 2901525293 is a prime.

It is a super-2 number, since 2×2902049581² = 16843783541164551122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2902049281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1451024790 + 1451024791.

It is an arithmetic number, because the mean of its divisors is an integer number (1451024791).

Almost surely, 2^2902049581 is an apocalyptic number.

It is an amenable number.

2902049581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2902049581 is an equidigital number, since it uses as much as digits as its factorization.

2902049581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 2902049581 is about 53870.6745920264. The cubic root of 2902049581 is about 1426.3790210099.

The spelling of 2902049581 in words is "two billion, nine hundred two million, forty-nine thousand, five hundred eighty-one".