1429451638 has 4 divisors (see below), whose sum is σ = 2144177460. Its totient is φ = 714725818.

The previous prime is 1429451629. The next prime is 1429451657. The reversal of 1429451638 is 8361549241.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1429451594 and 1429451603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357362908 + ... + 357362911.

It is an arithmetic number, because the mean of its divisors is an integer number (536044365).

Almost surely, 2^1429451638 is an apocalyptic number.

1429451638 is a deficient number, since it is larger than the sum of its proper divisors (714725822).

1429451638 is an equidigital number, since it uses as much as digits as its factorization.

1429451638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714725821.

The product of its digits is 207360, while the sum is 43.

The square root of 1429451638 is about 37808.0895841088. The cubic root of 1429451638 is about 1126.4791442201.

The spelling of 1429451638 in words is "one billion, four hundred twenty-nine million, four hundred fifty-one thousand, six hundred thirty-eight".