190925341890 has 64 divisors (see below), whose sum is σ = 469575950976. Its totient is φ = 49655273472.

The previous prime is 190925341861. The next prime is 190925341903. The reversal of 190925341890 is 98143529091.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 758212 + ... + 978128.

It is an arithmetic number, because the mean of its divisors is an integer number (7337124234).

Almost surely, 2^190925341890 is an apocalyptic number.

190925341890 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 190925341890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234787975488).

190925341890 is an abundant number, since it is smaller than the sum of its proper divisors (278650609086).

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

190925341890 is a wasteful number, since it uses less digits than its factorization.

190925341890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220643.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 190925341890 in words is "one hundred ninety billion, nine hundred twenty-five million, three hundred forty-one thousand, eight hundred ninety".