2154398426 has 4 divisors (see below), whose sum is σ = 3231597642. Its totient is φ = 1077199212.

The previous prime is 2154398419. The next prime is 2154398437. The reversal of 2154398426 is 6248934512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1532644201 + 621754225 = 39149^2 + 24935^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538599605 + ... + 538599608.

Almost surely, 2^2154398426 is an apocalyptic number.

2154398426 is a deficient number, since it is larger than the sum of its proper divisors (1077199216).

2154398426 is a wasteful number, since it uses less digits than its factorization.

2154398426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077199215.

The product of its digits is 414720, while the sum is 44.

The square root of 2154398426 is about 46415.4976920425. The cubic root of 2154398426 is about 1291.5424184022.

The spelling of 2154398426 in words is "two billion, one hundred fifty-four million, three hundred ninety-eight thousand, four hundred twenty-six".