190994940 has 72 divisors (see below), whose sum is σ = 585377520. Its totient is φ = 50402304.

The previous prime is 190994929. The next prime is 190994959. The reversal of 190994940 is 49499091.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11991 + ... + 22929.

Almost surely, 2^190994940 is an apocalyptic number.

190994940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190994940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292688760).

190994940 is an abundant number, since it is smaller than the sum of its proper divisors (394382580).

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

190994940 is a wasteful number, since it uses less digits than its factorization.

190994940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11051 (or 11046 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 190994940 is about 13820.0918954977. The cubic root of 190994940 is about 575.8914364260.

The spelling of 190994940 in words is "one hundred ninety million, nine hundred ninety-four thousand, nine hundred forty".