1349386280 has 32 divisors (see below), whose sum is σ = 3312131040. Its totient is φ = 490685760.

The previous prime is 1349386279. The next prime is 1349386343. The reversal of 1349386280 is 826839431.

It is a super-3 number, since 3×1349386280³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 1532954 + ... + 1533833.

It is an arithmetic number, because the mean of its divisors is an integer number (103504095).

Almost surely, 2^1349386280 is an apocalyptic number.

1349386280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1349386280 is an abundant number, since it is smaller than the sum of its proper divisors (1962744760).

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

1349386280 is a wasteful number, since it uses less digits than its factorization.

1349386280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066809 (or 3066805 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1349386280 is about 36733.9935209882. The cubic root of 1349386280 is about 1105.0419454058.

The spelling of 1349386280 in words is "one billion, three hundred forty-nine million, three hundred eighty-six thousand, two hundred eighty".