1972122733 has 4 divisors (see below), whose sum is σ = 2253854560. Its totient is φ = 1690390908.

The previous prime is 1972122707. The next prime is 1972122749. The reversal of 1972122733 is 3372212791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3372212791 = 59 ⋅57156149.

It is a cyclic number.

It is not a de Polignac number, because 1972122733 - 2¹⁷ = 1971991661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1972122692 and 1972122701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972126733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140865903 + ... + 140865916.

It is an arithmetic number, because the mean of its divisors is an integer number (563463640).

Almost surely, 2^1972122733 is an apocalyptic number.

It is an amenable number.

1972122733 is a deficient number, since it is larger than the sum of its proper divisors (281731827).

1972122733 is an equidigital number, since it uses as much as digits as its factorization.

1972122733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281731826.

The product of its digits is 31752, while the sum is 37.

The square root of 1972122733 is about 44408.5885049277. The cubic root of 1972122733 is about 1254.0397797854.

The spelling of 1972122733 in words is "one billion, nine hundred seventy-two million, one hundred twenty-two thousand, seven hundred thirty-three".