1972248615 has 16 divisors (see below), whose sum is σ = 3506220000. Its totient is φ = 1051865856.

The previous prime is 1972248611. The next prime is 1972248647. The reversal of 1972248615 is 5168422791.

1972248615 is a `hidden beast` number, since 1 + 9 + 7 + 2 + 24 + 8 + 615 = 666.

It is not a de Polignac number, because 1972248615 - 2² = 1972248611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972248611) 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, 7304490 + ... + 7304759.

It is an arithmetic number, because the mean of its divisors is an integer number (219138750).

Almost surely, 2^1972248615 is an apocalyptic number.

1972248615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1972248615 is a deficient number, since it is larger than the sum of its proper divisors (1533971385).

1972248615 is a wasteful number, since it uses less digits than its factorization.

1972248615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14609263 (or 14609257 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1972248615 is about 44410.0057982433. The cubic root of 1972248615 is about 1254.0664613020.

The spelling of 1972248615 in words is "one billion, nine hundred seventy-two million, two hundred forty-eight thousand, six hundred fifteen".