1429663646 has 16 divisors (see below), whose sum is σ = 2207993040. Its totient is φ = 693763200.

The previous prime is 1429663639. The next prime is 1429663661. The reversal of 1429663646 is 6463669241.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1429663646.

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, 5585 + ... + 53763.

It is an arithmetic number, because the mean of its divisors is an integer number (137999565).

Almost surely, 2^1429663646 is an apocalyptic number.

1429663646 is a deficient number, since it is larger than the sum of its proper divisors (778329394).

1429663646 is a wasteful number, since it uses less digits than its factorization.

1429663646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48619.

The product of its digits is 1119744, while the sum is 47.

The square root of 1429663646 is about 37810.8932187538. The cubic root of 1429663646 is about 1126.5348324243.

The spelling of 1429663646 in words is "one billion, four hundred twenty-nine million, six hundred sixty-three thousand, six hundred forty-six".