1018305490 has 16 divisors (see below), whose sum is σ = 1882489752. Its totient is φ = 396313344.

The previous prime is 1018305467. The next prime is 1018305511. The reversal of 1018305490 is 945038101.

It can be written as a sum of positive squares in 4 ways, for example, as 695851641 + 322453849 = 26379^2 + 17957^2 .

It is an alternating number because its digits alternate between odd and even.

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, 1375719 + ... + 1376458.

Almost surely, 2^1018305490 is an apocalyptic number.

1018305490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1018305490 is a deficient number, since it is larger than the sum of its proper divisors (864184262).

1018305490 is a wasteful number, since it uses less digits than its factorization.

1018305490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752221.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1018305490 is about 31910.8992352143. The cubic root of 1018305490 is about 1006.0649717532.

The spelling of 1018305490 in words is "one billion, eighteen million, three hundred five thousand, four hundred ninety".