189691601040 has 60 divisors (see below), whose sum is σ = 637047629244. Its totient is φ = 50584426752.

The previous prime is 189691600991. The next prime is 189691601129. The reversal of 189691601040 is 40106196981.

189691601040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 116480229264 + 73211371776 = 341292^2 + 270576^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131729559 + ... + 131730998.

Almost surely, 2^189691601040 is an apocalyptic number.

189691601040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189691601040 is an abundant number, since it is smaller than the sum of its proper divisors (447356028204).

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

189691601040 is a wasteful number, since it uses less digits than its factorization.

189691601040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263460576 (or 263460567 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 189691601040 in words is "one hundred eighty-nine billion, six hundred ninety-one million, six hundred one thousand, forty".