1398481266 has 48 divisors (see below), whose sum is σ = 3503896704. Its totient is φ = 368829216.

The previous prime is 1398481241. The next prime is 1398481309. The reversal of 1398481266 is 6621848931.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179130 + ... + 186773.

It is an arithmetic number, because the mean of its divisors is an integer number (72997848).

Almost surely, 2^1398481266 is an apocalyptic number.

1398481266 is an abundant number, since it is smaller than the sum of its proper divisors (2105415438).

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

1398481266 is a wasteful number, since it uses less digits than its factorization.

1398481266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365935 (or 365928 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 1398481266 is about 37396.2734239657. The cubic root of 1398481266 is about 1118.2842740664.

The spelling of 1398481266 in words is "one billion, three hundred ninety-eight million, four hundred eighty-one thousand, two hundred sixty-six".