1490523994 has 8 divisors (see below), whose sum is σ = 2367302868. Its totient is φ = 701423040.

The previous prime is 1490523971. The next prime is 1490524037. The reversal of 1490523994 is 4993250941.

It can be written as a sum of positive squares in 2 ways, for example, as 1247007969 + 243516025 = 35313^2 + 15605^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21919437 + ... + 21919504.

Almost surely, 2^1490523994 is an apocalyptic number.

1490523994 is a deficient number, since it is larger than the sum of its proper divisors (876778874).

1490523994 is a wasteful number, since it uses less digits than its factorization.

1490523994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43838960.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 1490523994 is about 38607.3049305439. The cubic root of 1490523994 is about 1142.2986333100.

The spelling of 1490523994 in words is "one billion, four hundred ninety million, five hundred twenty-three thousand, nine hundred ninety-four".