1974823469 has 4 divisors (see below), whose sum is σ = 2042920860. Its totient is φ = 1906726080.

The previous prime is 1974823453. The next prime is 1974823471. The reversal of 1974823469 is 9643284791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 703045225 + 1271778244 = 26515^2 + 35662^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974823469 - 2⁴ = 1974823453 is a prime.

It is a super-2 number, since 2×1974823469² = 7799855467426387922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1974823469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974823439) 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, 34048652 + ... + 34048709.

It is an arithmetic number, because the mean of its divisors is an integer number (510730215).

Almost surely, 2^1974823469 is an apocalyptic number.

It is an amenable number.

1974823469 is a deficient number, since it is larger than the sum of its proper divisors (68097391).

1974823469 is an equidigital number, since it uses as much as digits as its factorization.

1974823469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68097390.

The product of its digits is 2612736, while the sum is 53.

The square root of 1974823469 is about 44438.9859132721. The cubic root of 1974823469 is about 1254.6119695817.

The spelling of 1974823469 in words is "one billion, nine hundred seventy-four million, eight hundred twenty-three thousand, four hundred sixty-nine".