1618280260 has 12 divisors (see below), whose sum is σ = 3398388588. Its totient is φ = 647312096.

The previous prime is 1618280221. The next prime is 1618280263. The reversal of 1618280260 is 620828161.

It can be written as a sum of positive squares in 2 ways, for example, as 1137443076 + 480837184 = 33726^2 + 21928^2 .

It is not an unprimeable number, because it can be changed into a prime (1618280263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40456987 + ... + 40457026.

It is an arithmetic number, because the mean of its divisors is an integer number (283199049).

Almost surely, 2^1618280260 is an apocalyptic number.

1618280260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1618280260 is an abundant number, since it is smaller than the sum of its proper divisors (1780108328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1618280260 is a wasteful number, since it uses less digits than its factorization.

1618280260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80914022 (or 80914020 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1618280260 is about 40227.8542803367. The cubic root of 1618280260 is about 1174.0445554224.

The spelling of 1618280260 in words is "one billion, six hundred eighteen million, two hundred eighty thousand, two hundred sixty".