189402601077 has 40 divisors (see below), whose sum is σ = 296326483200. Its totient is φ = 120332472480.

The previous prime is 189402601061. The next prime is 189402601081. The reversal of 189402601077 is 770106204981.

It is a happy number.

189402601077 is a `hidden beast` number, since 1 + 89 + 402 + 60 + 107 + 7 = 666.

It is not a de Polignac number, because 189402601077 - 2⁴ = 189402601061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189402601097) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 317299 + ... + 692447.

It is an arithmetic number, because the mean of its divisors is an integer number (7408162080).

Almost surely, 2^189402601077 is an apocalyptic number.

It is an amenable number.

189402601077 is a deficient number, since it is larger than the sum of its proper divisors (106923882123).

189402601077 is a wasteful number, since it uses less digits than its factorization.

189402601077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375455 (or 375446 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 189402601077 in words is "one hundred eighty-nine billion, four hundred two million, six hundred one thousand, seventy-seven".