191609245632 has 168 divisors, whose sum is σ = 624426989904. Its totient is φ = 51525132288.

The previous prime is 191609245613. The next prime is 191609245637. The reversal of 191609245632 is 236542906191.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×191609245632² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191609245637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439083 + ... + 758954.

Almost surely, 2^191609245632 is an apocalyptic number.

191609245632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191609245632 is an abundant number, since it is smaller than the sum of its proper divisors (432817744272).

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

191609245632 is a wasteful number, since it uses less digits than its factorization.

191609245632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198083 (or 1198066 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 191609245632 in words is "one hundred ninety-one billion, six hundred nine million, two hundred forty-five thousand, six hundred thirty-two".