2152637990 has 16 divisors (see below), whose sum is σ = 3899431152. Its totient is φ = 855570144.

The previous prime is 2152637987. The next prime is 2152637999. The reversal of 2152637990 is 997362512.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152637999) 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, 683984 + ... + 687123.

It is an arithmetic number, because the mean of its divisors is an integer number (243714447).

Almost surely, 2^2152637990 is an apocalyptic number.

2152637990 is a deficient number, since it is larger than the sum of its proper divisors (1746793162).

2152637990 is a wasteful number, since it uses less digits than its factorization.

2152637990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371271.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 2152637990 is about 46396.5299348992. The cubic root of 2152637990 is about 1291.1905340395.

The spelling of 2152637990 in words is "two billion, one hundred fifty-two million, six hundred thirty-seven thousand, nine hundred ninety".