190018550 has 12 divisors (see below), whose sum is σ = 353434596. Its totient is φ = 76007400.

The previous prime is 190018547. The next prime is 190018553. The reversal of 190018550 is 55810091.

It is an interprime number because it is at equal distance from previous prime (190018547) and next prime (190018553).

It is a super-2 number, since 2×190018550² = 72214098688205000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190018553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1900136 + ... + 1900235.

It is an arithmetic number, because the mean of its divisors is an integer number (29452883).

Almost surely, 2^190018550 is an apocalyptic number.

190018550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190018550 is a deficient number, since it is larger than the sum of its proper divisors (163416046).

190018550 is a wasteful number, since it uses less digits than its factorization.

190018550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800383 (or 3800378 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 190018550 is about 13784.7216148894. The cubic root of 190018550 is about 574.9084164156.

The spelling of 190018550 in words is "one hundred ninety million, eighteen thousand, five hundred fifty".