1974291489 has 15 divisors (see below), whose sum is σ = 2949847747. Its totient is φ = 1315927728.

The previous prime is 1974291469. The next prime is 1974291509. The reversal of 1974291489 is 9841924791.

The square root of 1974291489 is 44433.

It is a perfect power (a square), and thus also a powerful number.

1974291489 is a `hidden beast` number, since 1 + 9 + 74 + 2 + 91 + 489 = 666.

It is an interprime number because it is at equal distance from previous prime (1974291469) and next prime (1974291509).

It can be written as a sum of positive squares in only one way, i.e., 858197025 + 1116094464 = 29295^2 + 33408^2 .

It is not a de Polignac number, because 1974291489 - 2²³ = 1965902881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1974291469) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 397429 + ... + 402365.

Almost surely, 2^1974291489 is an apocalyptic number.

1974291489 is the 44433-rd square number.

1974291489 is the 22217-th centered octagonal number.

It is an amenable number.

1974291489 is a deficient number, since it is larger than the sum of its proper divisors (975556258).

1974291489 is an frugal number, since it uses more digits than its factorization.

1974291489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9886 (or 4940 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The cubic root of 1974291489 is about 1254.4993032387.

The spelling of 1974291489 in words is "one billion, nine hundred seventy-four million, two hundred ninety-one thousand, four hundred eighty-nine".