1349408220 has 24 divisors (see below), whose sum is σ = 3778343184. Its totient is φ = 359842176.

The previous prime is 1349408209. The next prime is 1349408231. The reversal of 1349408220 is 228049431.

It is an interprime number because it is at equal distance from previous prime (1349408209) and next prime (1349408231).

It is a congruent number.

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, 11245009 + ... + 11245128.

It is an arithmetic number, because the mean of its divisors is an integer number (157430966).

Almost surely, 2^1349408220 is an apocalyptic number.

1349408220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1349408220 is an abundant number, since it is smaller than the sum of its proper divisors (2428934964).

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

1349408220 is a wasteful number, since it uses less digits than its factorization.

1349408220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22490149 (or 22490147 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1349408220 is about 36734.2921532456. The cubic root of 1349408220 is about 1105.0479344220.

The spelling of 1349408220 in words is "one billion, three hundred forty-nine million, four hundred eight thousand, two hundred twenty".