538942290 has 32 divisors (see below), whose sum is σ = 1294767936. Its totient is φ = 143572800.

The previous prime is 538942267. The next prime is 538942291. The reversal of 538942290 is 92249835.

It is not an unprimeable number, because it can be changed into a prime (538942291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22984 + ... + 40076.

It is an arithmetic number, because the mean of its divisors is an integer number (40461498).

Almost surely, 2^538942290 is an apocalyptic number.

538942290 is an abundant number, since it is smaller than the sum of its proper divisors (755825646).

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

538942290 is a wasteful number, since it uses less digits than its factorization.

538942290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18154.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 538942290 is about 23215.1306263824. The cubic root of 538942290 is about 813.7932584525.

The spelling of 538942290 in words is "five hundred thirty-eight million, nine hundred forty-two thousand, two hundred ninety".