2523401989 has 16 divisors (see below), whose sum is σ = 2683463680. Its totient is φ = 2366159040.

The previous prime is 2523401971. The next prime is 2523401999. The reversal of 2523401989 is 9891043252.

It is a cyclic number.

It is not a de Polignac number, because 2523401989 - 2⁵ = 2523401957 is a prime.

It is a super-2 number, since 2×2523401989² = 12735115196178312242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523401929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1304467 + ... + 1306399.

It is an arithmetic number, because the mean of its divisors is an integer number (167716480).

Almost surely, 2^2523401989 is an apocalyptic number.

It is an amenable number.

2523401989 is a deficient number, since it is larger than the sum of its proper divisors (160061691).

2523401989 is a wasteful number, since it uses less digits than its factorization.

2523401989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 2523401989 is about 50233.4747852465. The cubic root of 2523401989 is about 1361.4305141436.

The spelling of 2523401989 in words is "two billion, five hundred twenty-three million, four hundred one thousand, nine hundred eighty-nine".