1331617490 has 16 divisors (see below), whose sum is σ = 2739327552. Its totient is φ = 456554544.

The previous prime is 1331617481. The next prime is 1331617537. The reversal of 1331617490 is 947161331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1331617490.

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, 9511484 + ... + 9511623.

It is an arithmetic number, because the mean of its divisors is an integer number (171207972).

Almost surely, 2^1331617490 is an apocalyptic number.

1331617490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331617490 is an abundant number, since it is smaller than the sum of its proper divisors (1407710062).

1331617490 is a wasteful number, since it uses less digits than its factorization.

1331617490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19023121.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1331617490 is about 36491.3344507980. The cubic root of 1331617490 is about 1100.1700811388.

The spelling of 1331617490 in words is "one billion, three hundred thirty-one million, six hundred seventeen thousand, four hundred ninety".