2453989864 has 8 divisors (see below), whose sum is σ = 4601231010. Its totient is φ = 1226994928.

The previous prime is 2453989861. The next prime is 2453989903. The reversal of 2453989864 is 4689893542.

It can be written as a sum of positive squares in only one way, i.e., 2446093764 + 7896100 = 49458^2 + 2810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2453989864² = 12044132505229476992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2453989799 and 2453989808.

It is not an unprimeable number, because it can be changed into a prime (2453989861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153374359 + ... + 153374374.

Almost surely, 2^2453989864 is an apocalyptic number.

It is an amenable number.

2453989864 is a deficient number, since it is larger than the sum of its proper divisors (2147241146).

2453989864 is a wasteful number, since it uses less digits than its factorization.

2453989864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306748739 (or 306748735 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The square root of 2453989864 is about 49537.7620003165. The cubic root of 2453989864 is about 1348.8311536314.

The spelling of 2453989864 in words is "two billion, four hundred fifty-three million, nine hundred eighty-nine thousand, eight hundred sixty-four".