1681371404 has 12 divisors (see below), whose sum is σ = 2961142464. Its totient is φ = 835330704.

The previous prime is 1681371401. The next prime is 1681371413. The reversal of 1681371404 is 4041731861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1681371401) 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, 1338044 + ... + 1339299.

It is an arithmetic number, because the mean of its divisors is an integer number (246761872).

Almost surely, 2^1681371404 is an apocalyptic number.

It is an amenable number.

1681371404 is a deficient number, since it is larger than the sum of its proper divisors (1279771060).

1681371404 is a wasteful number, since it uses less digits than its factorization.

1681371404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677504 (or 2677502 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1681371404 is about 41004.5290669214. The cubic root of 1681371404 is about 1189.1077755243.

The spelling of 1681371404 in words is "one billion, six hundred eighty-one million, three hundred seventy-one thousand, four hundred four".