1408129820 has 12 divisors (see below), whose sum is σ = 2957072664. Its totient is φ = 563251920.

The previous prime is 1408129781. The next prime is 1408129837. The reversal of 1408129820 is 289218041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35203226 + ... + 35203265.

It is an arithmetic number, because the mean of its divisors is an integer number (246422722).

Almost surely, 2^1408129820 is an apocalyptic number.

1408129820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1408129820 is an abundant number, since it is smaller than the sum of its proper divisors (1548942844).

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

1408129820 is a wasteful number, since it uses less digits than its factorization.

1408129820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70406500 (or 70406498 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 1408129820 is about 37525.0558960277. The cubic root of 1408129820 is about 1120.8501782438.

The spelling of 1408129820 in words is "one billion, four hundred eight million, one hundred twenty-nine thousand, eight hundred twenty".