1349899506 has 80 divisors (see below), whose sum is σ = 3099311424. Its totient is φ = 440794224.

The previous prime is 1349899493. The next prime is 1349899519. The reversal of 1349899506 is 6059989431.

1349899506 is a `hidden beast` number, since 1 + 3 + 49 + 8 + 99 + 506 = 666.

It is an interprime number because it is at equal distance from previous prime (1349899493) and next prime (1349899519).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2086075 + ... + 2086721.

Almost surely, 2^1349899506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1349899506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549655712).

1349899506 is an abundant number, since it is smaller than the sum of its proper divisors (1749411918).

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

1349899506 is an frugal number, since it uses more digits than its factorization.

1349899506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 1349899506 is about 36740.9785661732. The cubic root of 1349899506 is about 1105.1820249811.

The spelling of 1349899506 in words is "one billion, three hundred forty-nine million, eight hundred ninety-nine thousand, five hundred six".