1972624247 has 4 divisors (see below), whose sum is σ = 2151953736. Its totient is φ = 1793294760.

The previous prime is 1972624193. The next prime is 1972624273. The reversal of 1972624247 is 7424262791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7424262791 = 11 ⋅674932981.

It is a cyclic number.

It is not a de Polignac number, because 1972624247 - 2¹² = 1972620151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1972624198 and 1972624207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972624547) 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, 89664728 + ... + 89664749.

It is an arithmetic number, because the mean of its divisors is an integer number (537988434).

Almost surely, 2^1972624247 is an apocalyptic number.

1972624247 is a deficient number, since it is larger than the sum of its proper divisors (179329489).

1972624247 is a wasteful number, since it uses less digits than its factorization.

1972624247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179329488.

The product of its digits is 338688, while the sum is 44.

The square root of 1972624247 is about 44414.2347339229. The cubic root of 1972624247 is about 1254.1460722237.

The spelling of 1972624247 in words is "one billion, nine hundred seventy-two million, six hundred twenty-four thousand, two hundred forty-seven".