1375222992 has 320 divisors, whose sum is σ = 4511711232. Its totient is φ = 354816000.

The previous prime is 1375222991. The next prime is 1375222997. The reversal of 1375222992 is 2992225731.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375222991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4893892 + ... + 4894172.

Almost surely, 2^1375222992 is an apocalyptic number.

1375222992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375222992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255855616).

1375222992 is an abundant number, since it is smaller than the sum of its proper divisors (3136488240).

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

1375222992 is a wasteful number, since it uses less digits than its factorization.

1375222992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 364 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 1375222992 is about 37083.9991370942. Note that the first 3 decimals coincide. The cubic root of 1375222992 is about 1112.0501547345.

The spelling of 1375222992 in words is "one billion, three hundred seventy-five million, two hundred twenty-two thousand, nine hundred ninety-two".