190440943557 has 8 divisors (see below), whose sum is σ = 253923500160. Its totient is φ = 126959508000.

The previous prime is 190440943547. The next prime is 190440943571. The reversal of 190440943557 is 755349044091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 190440943557 - 2¹⁶ = 190440878021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190440943547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271057 + ... + 674057.

It is an arithmetic number, because the mean of its divisors is an integer number (31740437520).

Almost surely, 2^190440943557 is an apocalyptic number.

It is an amenable number.

190440943557 is a deficient number, since it is larger than the sum of its proper divisors (63482556603).

190440943557 is a wasteful number, since it uses less digits than its factorization.

190440943557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560523.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 190440943557 in words is "one hundred ninety billion, four hundred forty million, nine hundred forty-three thousand, five hundred fifty-seven".