4018423890 has 32 divisors (see below), whose sum is σ = 10386081216. Its totient is φ = 989150400.

The previous prime is 4018423883. The next prime is 4018423901. The reversal of 4018423890 is 983248104.

It is a super-2 number, since 2×4018423890² = 32295461119445464200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5151436 + ... + 5152215.

It is an arithmetic number, because the mean of its divisors is an integer number (324565038).

Almost surely, 2^4018423890 is an apocalyptic number.

4018423890 is an abundant number, since it is smaller than the sum of its proper divisors (6367657326).

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

4018423890 is a wasteful number, since it uses less digits than its factorization.

4018423890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10303674.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 4018423890 is about 63391.0395087508. The cubic root of 4018423890 is about 1589.8344948571.

The spelling of 4018423890 in words is "four billion, eighteen million, four hundred twenty-three thousand, eight hundred ninety".