190400417887 has 8 divisors (see below), whose sum is σ = 194458283712. Its totient is φ = 186342835200.

The previous prime is 190400417863. The next prime is 190400417923. The reversal of 190400417887 is 788714004091.

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

It is a cyclic number.

It is not a de Polignac number, because 190400417887 - 2¹¹ = 190400415839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190400417887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190400417087) 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, 1821687 + ... + 1923367.

It is an arithmetic number, because the mean of its divisors is an integer number (24307285464).

Almost surely, 2^190400417887 is an apocalyptic number.

190400417887 is a deficient number, since it is larger than the sum of its proper divisors (4057865825).

190400417887 is a wasteful number, since it uses less digits than its factorization.

190400417887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141569.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 190400417887 in words is "one hundred ninety billion, four hundred million, four hundred seventeen thousand, eight hundred eighty-seven".