1371920289 has 16 divisors (see below), whose sum is σ = 1970284800. Its totient is φ = 846323856.

The previous prime is 1371920287. The next prime is 1371920321. The reversal of 1371920289 is 9820291731.

It is not a de Polignac number, because 1371920289 - 2¹ = 1371920287 is a prime.

It is a super-4 number, since 4×1371920289⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1371920289.

It is not an unprimeable number, because it can be changed into a prime (1371920287) 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, 277419 + ... + 282320.

It is an arithmetic number, because the mean of its divisors is an integer number (123142800).

Almost surely, 2^1371920289 is an apocalyptic number.

1371920289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1371920289 is a deficient number, since it is larger than the sum of its proper divisors (598364511).

1371920289 is a wasteful number, since it uses less digits than its factorization.

1371920289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559804.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1371920289 is about 37039.4423419144. The cubic root of 1371920289 is about 1111.1592166880.

The spelling of 1371920289 in words is "one billion, three hundred seventy-one million, nine hundred twenty thousand, two hundred eighty-nine".