1019990163 has 6 divisors (see below), whose sum is σ = 1360060644. Its totient is φ = 679956564.

The previous prime is 1019990161. The next prime is 1019990173. The reversal of 1019990163 is 3610999101.

It is a happy number.

It is not a de Polignac number, because 1019990163 - 2¹ = 1019990161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1019990161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46098 + ... + 64536.

It is an arithmetic number, because the mean of its divisors is an integer number (226676774).

Almost surely, 2^1019990163 is an apocalyptic number.

1019990163 is a deficient number, since it is larger than the sum of its proper divisors (340070481).

1019990163 is an frugal number, since it uses more digits than its factorization.

1019990163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36881 (or 18442 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 1019990163 is about 31937.2848407625. The cubic root of 1019990163 is about 1006.6194735538.

The spelling of 1019990163 in words is "one billion, nineteen million, nine hundred ninety thousand, one hundred sixty-three".