1506990497 has 8 divisors (see below), whose sum is σ = 1512801576. Its totient is φ = 1501189632.

The previous prime is 1506990467. The next prime is 1506990503. The reversal of 1506990497 is 7940996051.

It can be written as a sum of positive squares in 4 ways, for example, as 78074896 + 1428915601 = 8836^2 + 37801^2 .

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 1506990497 - 2²⁴ = 1490213281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1506990437) 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, 414833 + ... + 418449.

It is an arithmetic number, because the mean of its divisors is an integer number (189100197).

Almost surely, 2^1506990497 is an apocalyptic number.

It is an amenable number.

1506990497 is a deficient number, since it is larger than the sum of its proper divisors (5811079).

1506990497 is a wasteful number, since it uses less digits than its factorization.

1506990497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 1506990497 is about 38819.9754894307. The cubic root of 1506990497 is about 1146.4897364905.

The spelling of 1506990497 in words is "one billion, five hundred six million, nine hundred ninety thousand, four hundred ninety-seven".