190910735890 has 32 divisors (see below), whose sum is σ = 393090128640. Its totient is φ = 65395197504.

The previous prime is 190910735887. The next prime is 190910735891. The reversal of 190910735890 is 98537019091.

It is a happy number.

It is a super-2 number, since 2×190910735890² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190910735891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171110 + ... + 1324129.

It is an arithmetic number, because the mean of its divisors is an integer number (12284066520).

Almost surely, 2^190910735890 is an apocalyptic number.

190910735890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190910735890 is an abundant number, since it is smaller than the sum of its proper divisors (202179392750).

190910735890 is a wasteful number, since it uses less digits than its factorization.

190910735890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496346.

The product of its (nonzero) digits is 612360, while the sum is 52.

The spelling of 190910735890 in words is "one hundred ninety billion, nine hundred ten million, seven hundred thirty-five thousand, eight hundred ninety".