2152798397 has 16 divisors (see below), whose sum is σ = 2269848768. Its totient is φ = 2039748480.

The previous prime is 2152798381. The next prime is 2152798399. The reversal of 2152798397 is 7938972512.

It is a happy number.

It is not a de Polignac number, because 2152798397 - 2⁴ = 2152798381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152798399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185858 + ... + 197100.

It is an arithmetic number, because the mean of its divisors is an integer number (141865548).

Almost surely, 2^2152798397 is an apocalyptic number.

It is an amenable number.

2152798397 is a deficient number, since it is larger than the sum of its proper divisors (117050371).

2152798397 is a wasteful number, since it uses less digits than its factorization.

2152798397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11420.

The product of its digits is 1905120, while the sum is 53.

The square root of 2152798397 is about 46398.2585556829. The cubic root of 2152798397 is about 1291.2226048997. Note that the first 3 decimals are identical.

The spelling of 2152798397 in words is "two billion, one hundred fifty-two million, seven hundred ninety-eight thousand, three hundred ninety-seven".