190820617250 has 64 divisors (see below), whose sum is σ = 363886248960. Its totient is φ = 74907417600.

The previous prime is 190820617241. The next prime is 190820617259. The reversal of 190820617250 is 52716028091.

It is an interprime number because it is at equal distance from previous prime (190820617241) and next prime (190820617259).

It is a junction number, because it is equal to n+sod(n) for n = 190820617198 and 190820617207.

It is not an unprimeable number, because it can be changed into a prime (190820617259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8942594 + ... + 8963906.

It is an arithmetic number, because the mean of its divisors is an integer number (5685722640).

Almost surely, 2^190820617250 is an apocalyptic number.

190820617250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190820617250 is a deficient number, since it is larger than the sum of its proper divisors (173065631710).

190820617250 is a wasteful number, since it uses less digits than its factorization.

190820617250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21996 (or 21986 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 190820617250 in words is "one hundred ninety billion, eight hundred twenty million, six hundred seventeen thousand, two hundred fifty".