2158613390 has 16 divisors (see below), whose sum is σ = 4010843520. Its totient is φ = 835592160.

The previous prime is 2158613363. The next prime is 2158613393. The reversal of 2158613390 is 933168512.

It is a happy number.

2158613390 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2158613390² = 9319223534974584200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158613393) 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, 3481325 + ... + 3481944.

It is an arithmetic number, because the mean of its divisors is an integer number (250677720).

Almost surely, 2^2158613390 is an apocalyptic number.

2158613390 is a deficient number, since it is larger than the sum of its proper divisors (1852230130).

2158613390 is a wasteful number, since it uses less digits than its factorization.

2158613390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963307.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2158613390 is about 46460.8802112056. The cubic root of 2158613390 is about 1292.3841473378.

The spelling of 2158613390 in words is "two billion, one hundred fifty-eight million, six hundred thirteen thousand, three hundred ninety".