1429731856 has 20 divisors (see below), whose sum is σ = 3165835072. Its totient is φ = 612742176.

The previous prime is 1429731829. The next prime is 1429731857. The reversal of 1429731856 is 6581379241.

It is a super-2 number, since 2×1429731856² = 4088266360122409472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1429731857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6382620 + ... + 6382843.

Almost surely, 2^1429731856 is an apocalyptic number.

1429731856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1429731856 is an abundant number, since it is smaller than the sum of its proper divisors (1736103216).

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

1429731856 is a wasteful number, since it uses less digits than its factorization.

1429731856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12765478 (or 12765472 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 1429731856 is about 37811.7951967372. The cubic root of 1429731856 is about 1126.5527479947.

The spelling of 1429731856 in words is "one billion, four hundred twenty-nine million, seven hundred thirty-one thousand, eight hundred fifty-six".