1429634381 has 4 divisors (see below), whose sum is σ = 1633867872. Its totient is φ = 1225400892.

The previous prime is 1429634377. The next prime is 1429634387. The reversal of 1429634381 is 1834369241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1429634381 - 2² = 1429634377 is a prime.

It is a super-4 number, since 4×1429634381⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429634387) 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, 102116735 + ... + 102116748.

It is an arithmetic number, because the mean of its divisors is an integer number (408466968).

Almost surely, 2^1429634381 is an apocalyptic number.

It is an amenable number.

1429634381 is a deficient number, since it is larger than the sum of its proper divisors (204233491).

1429634381 is an equidigital number, since it uses as much as digits as its factorization.

1429634381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204233490.

The product of its digits is 124416, while the sum is 41.

The square root of 1429634381 is about 37810.5062251221. The cubic root of 1429634381 is about 1126.5271457057.

The spelling of 1429634381 in words is "one billion, four hundred twenty-nine million, six hundred thirty-four thousand, three hundred eighty-one".