1670691042 has 64 divisors (see below), whose sum is σ = 3812497920. Its totient is φ = 541987200.

The previous prime is 1670691019. The next prime is 1670691047. The reversal of 1670691042 is 2401960761.

It is a junction number, because it is equal to n+sod(n) for n = 1670690988 and 1670691006.

It is not an unprimeable number, because it can be changed into a prime (1670691047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1356567 + ... + 1357797.

It is an arithmetic number, because the mean of its divisors is an integer number (59570280).

Almost surely, 2^1670691042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670691042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906248960).

1670691042 is an abundant number, since it is smaller than the sum of its proper divisors (2141806878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1670691042 is a wasteful number, since it uses less digits than its factorization.

1670691042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1670691042 is about 40874.0876595429. The cubic root of 1670691042 is about 1186.5846193571.

The spelling of 1670691042 in words is "one billion, six hundred seventy million, six hundred ninety-one thousand, forty-two".