618090426 has 24 divisors (see below), whose sum is σ = 1388796864. Its totient is φ = 206029980.

The previous prime is 618090409. The next prime is 618090443. The reversal of 618090426 is 624090816.

It is an interprime number because it is at equal distance from previous prime (618090409) and next prime (618090443).

It is a super-2 number, since 2×618090426² = 764071549425722952, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635410 + ... + 636381.

It is an arithmetic number, because the mean of its divisors is an integer number (57866536).

Almost surely, 2^618090426 is an apocalyptic number.

618090426 is an abundant number, since it is smaller than the sum of its proper divisors (770706438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618090426 is a wasteful number, since it uses less digits than its factorization.

618090426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271808 (or 1271796 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 618090426 is about 24861.4244563742. The cubic root of 618090426 is about 851.8255693298.

The spelling of 618090426 in words is "six hundred eighteen million, ninety thousand, four hundred twenty-six".