2153969398 has 16 divisors (see below), whose sum is σ = 3716976384. Its totient is φ = 917015400.

The previous prime is 2153969369. The next prime is 2153969401. The reversal of 2153969398 is 8939693512.

It is a happy number.

2153969398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507340 + ... + 511567.

It is an arithmetic number, because the mean of its divisors is an integer number (232311024).

Almost surely, 2^2153969398 is an apocalyptic number.

2153969398 is a deficient number, since it is larger than the sum of its proper divisors (1563006986).

2153969398 is a wasteful number, since it uses less digits than its factorization.

2153969398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019067.

The product of its digits is 3149280, while the sum is 55.

The square root of 2153969398 is about 46410.8758590053. The cubic root of 2153969398 is about 1291.4566799056.

The spelling of 2153969398 in words is "two billion, one hundred fifty-three million, nine hundred sixty-nine thousand, three hundred ninety-eight".