1371967989 has 16 divisors (see below), whose sum is σ = 2162709120. Its totient is φ = 756947520.

The previous prime is 1371967969. The next prime is 1371967991. The reversal of 1371967989 is 9897691731.

It is not a de Polignac number, because 1371967989 - 2¹² = 1371963893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371967939) 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, 1125802 + ... + 1127019.

It is an arithmetic number, because the mean of its divisors is an integer number (135169320).

Almost surely, 2^1371967989 is an apocalyptic number.

It is an amenable number.

1371967989 is a deficient number, since it is larger than the sum of its proper divisors (790741131).

1371967989 is a wasteful number, since it uses less digits than its factorization.

1371967989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252860.

The product of its digits is 5143824, while the sum is 60.

The square root of 1371967989 is about 37040.0862445000. The cubic root of 1371967989 is about 1111.1720944236.

The spelling of 1371967989 in words is "one billion, three hundred seventy-one million, nine hundred sixty-seven thousand, nine hundred eighty-nine".