1429681857 has 8 divisors (see below), whose sum is σ = 1908561984. Its totient is φ = 951961488.

The previous prime is 1429681853. The next prime is 1429681871. The reversal of 1429681857 is 7581869241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1429681857 - 2² = 1429681853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1429681853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287058 + ... + 291995.

It is an arithmetic number, because the mean of its divisors is an integer number (238570248).

Almost surely, 2^1429681857 is an apocalyptic number.

It is an amenable number.

1429681857 is a deficient number, since it is larger than the sum of its proper divisors (478880127).

1429681857 is an equidigital number, since it uses as much as digits as its factorization.

1429681857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579879.

The product of its digits is 967680, while the sum is 51.

The square root of 1429681857 is about 37811.1340348316. The cubic root of 1429681857 is about 1126.5396156564.

The spelling of 1429681857 in words is "one billion, four hundred twenty-nine million, six hundred eighty-one thousand, eight hundred fifty-seven".