1590317145 has 56 divisors (see below), whose sum is σ = 2922454656. Its totient is φ = 830033568.

The previous prime is 1590317137. The next prime is 1590317147. The reversal of 1590317145 is 5417130951.

It is a happy number.

It is not a de Polignac number, because 1590317145 - 2³ = 1590317137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1590317147) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 166674 + ... + 175956.

Almost surely, 2^1590317145 is an apocalyptic number.

1590317145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1590317145 is a deficient number, since it is larger than the sum of its proper divisors (1332137511).

1590317145 is an frugal number, since it uses more digits than its factorization.

1590317145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9353 (or 9338 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1590317145 is about 39878.7806358219. The cubic root of 1590317145 is about 1167.2429163702.

It can be divided in two parts, 159031 and 7145, that added together give a triangular number (166176 = T₅₇₆).

The spelling of 1590317145 in words is "one billion, five hundred ninety million, three hundred seventeen thousand, one hundred forty-five".