905230190 has 32 divisors (see below), whose sum is σ = 1667191680. Its totient is φ = 353793024.

The previous prime is 905230181. The next prime is 905230201. The reversal of 905230190 is 91032509.

It is a super-2 number, since 2×905230190² = 1638883393774872200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 70724 + ... + 82536.

It is an arithmetic number, because the mean of its divisors is an integer number (52099740).

Almost surely, 2^905230190 is an apocalyptic number.

905230190 is a deficient number, since it is larger than the sum of its proper divisors (761961490).

905230190 is a wasteful number, since it uses less digits than its factorization.

905230190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11996.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 905230190 is about 30087.0435569865. The cubic root of 905230190 is about 967.3560300077.

Adding to 905230190 its reverse (91032509), we get a palindrome (996262699).

The spelling of 905230190 in words is "nine hundred five million, two hundred thirty thousand, one hundred ninety".