191948670 has 64 divisors (see below), whose sum is σ = 518400000. Its totient is φ = 50532768.

The previous prime is 191948663. The next prime is 191948737. The reversal of 191948670 is 76849191.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 16831 + ... + 25829.

It is an arithmetic number, because the mean of its divisors is an integer number (8100000).

Almost surely, 2^191948670 is an apocalyptic number.

191948670 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 191948670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259200000).

191948670 is an abundant number, since it is smaller than the sum of its proper divisors (326451330).

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

191948670 is a wasteful number, since it uses less digits than its factorization.

191948670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094 (or 9088 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 191948670 is about 13854.5541249078. The cubic root of 191948670 is about 576.8484133531.

The spelling of 191948670 in words is "one hundred ninety-one million, nine hundred forty-eight thousand, six hundred seventy".