1381851434 has 16 divisors (see below), whose sum is σ = 2092182720. Its totient is φ = 684482400.

The previous prime is 1381851407. The next prime is 1381851439. The reversal of 1381851434 is 4341581831.

It is not an unprimeable number, because it can be changed into a prime (1381851439) 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, 108422 + ... + 120494.

It is an arithmetic number, because the mean of its divisors is an integer number (130761420).

Almost surely, 2^1381851434 is an apocalyptic number.

1381851434 is a deficient number, since it is larger than the sum of its proper divisors (710331286).

1381851434 is a wasteful number, since it uses less digits than its factorization.

1381851434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605.

The product of its digits is 46080, while the sum is 38.

The square root of 1381851434 is about 37173.2623534712. The cubic root of 1381851434 is about 1113.8339500039.

The spelling of 1381851434 in words is "one billion, three hundred eighty-one million, eight hundred fifty-one thousand, four hundred thirty-four".