1939129634 has 16 divisors (see below), whose sum is σ = 3205289472. Its totient is φ = 874168848.

The previous prime is 1939129627. The next prime is 1939129637. The reversal of 1939129634 is 4369219391.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1939129637) 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, 866114 + ... + 868349.

It is an arithmetic number, because the mean of its divisors is an integer number (200330592).

Almost surely, 2^1939129634 is an apocalyptic number.

1939129634 is a deficient number, since it is larger than the sum of its proper divisors (1266159838).

1939129634 is a wasteful number, since it uses less digits than its factorization.

1939129634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734521.

The product of its digits is 314928, while the sum is 47.

The square root of 1939129634 is about 44035.5496616086. The cubic root of 1939129634 is about 1247.0071619753.

The spelling of 1939129634 in words is "one billion, nine hundred thirty-nine million, one hundred twenty-nine thousand, six hundred thirty-four".