190621463 has 4 divisors (see below), whose sum is σ = 192403080. Its totient is φ = 188839848.

The previous prime is 190621427. The next prime is 190621477. The reversal of 190621463 is 364126091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190621463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190621363) 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, 890648 + ... + 890861.

It is an arithmetic number, because the mean of its divisors is an integer number (48100770).

Almost surely, 2^190621463 is an apocalyptic number.

190621463 is a deficient number, since it is larger than the sum of its proper divisors (1781617).

190621463 is a wasteful number, since it uses less digits than its factorization.

190621463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781616.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 190621463 is about 13806.5731809164. The cubic root of 190621463 is about 575.5158199286.

The spelling of 190621463 in words is "one hundred ninety million, six hundred twenty-one thousand, four hundred sixty-three".