2631657489 has 8 divisors (see below), whose sum is σ = 3529159872. Its totient is φ = 1744296720.

The previous prime is 2631657481. The next prime is 2631657499. The reversal of 2631657489 is 9847561362.

2631657489 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2631657489 - 2³ = 2631657481 is a prime.

It is a super-2 number, since 2×2631657489² = 13851242278819570242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2631657481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2534797 + ... + 2535834.

It is an arithmetic number, because the mean of its divisors is an integer number (441144984).

Almost surely, 2^2631657489 is an apocalyptic number.

It is an amenable number.

2631657489 is a deficient number, since it is larger than the sum of its proper divisors (897502383).

2631657489 is a wasteful number, since it uses less digits than its factorization.

2631657489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070807.

The product of its digits is 2177280, while the sum is 51.

The square root of 2631657489 is about 51299.6831276763. The cubic root of 2631657489 is about 1380.6272946281.

The spelling of 2631657489 in words is "two billion, six hundred thirty-one million, six hundred fifty-seven thousand, four hundred eighty-nine".