191361552 has 20 divisors (see below), whose sum is σ = 494350800. Its totient is φ = 63787168.

The previous prime is 191361551. The next prime is 191361589. The reversal of 191361552 is 255163191.

191361552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (191361551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993302 + ... + 1993397.

It is an arithmetic number, because the mean of its divisors is an integer number (24717540).

Almost surely, 2^191361552 is an apocalyptic number.

191361552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191361552 is an abundant number, since it is smaller than the sum of its proper divisors (302989248).

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

191361552 is a wasteful number, since it uses less digits than its factorization.

191361552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986710 (or 3986704 counting only the distinct ones).

The product of its digits is 8100, while the sum is 33.

The square root of 191361552 is about 13833.3492690671. The cubic root of 191361552 is about 576.2596726543.

The spelling of 191361552 in words is "one hundred ninety-one million, three hundred sixty-one thousand, five hundred fifty-two".