2521389198 has 16 divisors (see below), whose sum is σ = 5179070160. Its totient is φ = 817747776.

The previous prime is 2521389197. The next prime is 2521389223. The reversal of 2521389198 is 8919831252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521389197) 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, 5678583 + ... + 5679026.

It is an arithmetic number, because the mean of its divisors is an integer number (323691885).

Almost surely, 2^2521389198 is an apocalyptic number.

2521389198 is an abundant number, since it is smaller than the sum of its proper divisors (2657680962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521389198 is a wasteful number, since it uses less digits than its factorization.

2521389198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357651.

The product of its digits is 311040, while the sum is 48.

The square root of 2521389198 is about 50213.4364289081. The cubic root of 2521389198 is about 1361.0684362802.

It can be divided in two parts, 25213 and 89198, that added together give a palindrome (114411).

The spelling of 2521389198 in words is "two billion, five hundred twenty-one million, three hundred eighty-nine thousand, one hundred ninety-eight".