190961550 has 252 divisors, whose sum is σ = 595256544. Its totient is φ = 45489600.

The previous prime is 190961543. The next prime is 190961579. The reversal of 190961550 is 55169091.

190961550 is a `hidden beast` number, since 19 + 0 + 96 + 1 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 125 ways as a sum of consecutive naturals, for example, 6160035 + ... + 6160065.

Almost surely, 2^190961550 is an apocalyptic number.

190961550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 190961550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297628272).

190961550 is an abundant number, since it is smaller than the sum of its proper divisors (404294994).

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

190961550 is a wasteful number, since it uses less digits than its factorization.

190961550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 190961550 is about 13818.8838188907. The cubic root of 190961550 is about 575.8578750906.

The spelling of 190961550 in words is "one hundred ninety million, nine hundred sixty-one thousand, five hundred fifty".