1599481945 has 8 divisors (see below), whose sum is σ = 1923834240. Its totient is φ = 1276614960.

The previous prime is 1599481909. The next prime is 1599481963. The reversal of 1599481945 is 5491849951.

It is a happy number.

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

It is not a de Polignac number, because 1599481945 - 2¹¹ = 1599479897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368955 + ... + 373264.

It is an arithmetic number, because the mean of its divisors is an integer number (240479280).

Almost surely, 2^1599481945 is an apocalyptic number.

It is an amenable number.

1599481945 is a deficient number, since it is larger than the sum of its proper divisors (324352295).

1599481945 is an equidigital number, since it uses as much as digits as its factorization.

1599481945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742655.

The product of its digits is 2332800, while the sum is 55.

The square root of 1599481945 is about 39993.5237882335. The cubic root of 1599481945 is about 1169.4808481578.

The spelling of 1599481945 in words is "one billion, five hundred ninety-nine million, four hundred eighty-one thousand, nine hundred forty-five".