1490694191 has 16 divisors (see below), whose sum is σ = 1805376000. Its totient is φ = 1202348448.

The previous prime is 1490694187. The next prime is 1490694199. The reversal of 1490694191 is 1914960941.

It is not a de Polignac number, because 1490694191 - 2² = 1490694187 is a prime.

It is a super-2 number, since 2×1490694191² = 4444338342162288962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490694199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17795 + ... + 57428.

It is an arithmetic number, because the mean of its divisors is an integer number (112836000).

Almost surely, 2^1490694191 is an apocalyptic number.

1490694191 is a deficient number, since it is larger than the sum of its proper divisors (314681809).

1490694191 is a wasteful number, since it uses less digits than its factorization.

1490694191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75398.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 1490694191 is about 38609.5090748380. The cubic root of 1490694191 is about 1142.3421098328.

The spelling of 1490694191 in words is "one billion, four hundred ninety million, six hundred ninety-four thousand, one hundred ninety-one".