1970887839 has 16 divisors (see below), whose sum is σ = 2679921504. Its totient is φ = 1287936000.

The previous prime is 1970887817. The next prime is 1970887847. The reversal of 1970887839 is 9387880791.

It is not a de Polignac number, because 1970887839 - 2¹² = 1970883743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970887859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185799 + ... + 196119.

It is an arithmetic number, because the mean of its divisors is an integer number (167495094).

Almost surely, 2^1970887839 is an apocalyptic number.

1970887839 is a deficient number, since it is larger than the sum of its proper divisors (709033665).

1970887839 is a wasteful number, since it uses less digits than its factorization.

1970887839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The square root of 1970887839 is about 44394.6825532068. The cubic root of 1970887839 is about 1253.7779756695. Note that the first 3 decimals are identical.

The spelling of 1970887839 in words is "one billion, nine hundred seventy million, eight hundred eighty-seven thousand, eight hundred thirty-nine".