1429565991 has 32 divisors (see below), whose sum is σ = 2258188800. Its totient is φ = 787086720.

The previous prime is 1429565987. The next prime is 1429565993. The reversal of 1429565991 is 1995659241.

It is not a de Polignac number, because 1429565991 - 2² = 1429565987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429565993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327300 + ... + 331638.

It is an arithmetic number, because the mean of its divisors is an integer number (70568400).

Almost surely, 2^1429565991 is an apocalyptic number.

1429565991 is a deficient number, since it is larger than the sum of its proper divisors (828622809).

1429565991 is a wasteful number, since it uses less digits than its factorization.

1429565991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919.

The product of its digits is 874800, while the sum is 51.

The square root of 1429565991 is about 37809.6018360416. The cubic root of 1429565991 is about 1126.5091820405.

The spelling of 1429565991 in words is "one billion, four hundred twenty-nine million, five hundred sixty-five thousand, nine hundred ninety-one".