1974407549 has 16 divisors (see below), whose sum is σ = 2026454976. Its totient is φ = 1923264000.

The previous prime is 1974407509. The next prime is 1974407573. The reversal of 1974407549 is 9457044791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1974407549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1974407497 and 1974407506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974407509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1878074 + ... + 1879124.

It is an arithmetic number, because the mean of its divisors is an integer number (126653436).

Almost surely, 2^1974407549 is an apocalyptic number.

It is an amenable number.

1974407549 is a deficient number, since it is larger than the sum of its proper divisors (52047427).

1974407549 is a wasteful number, since it uses less digits than its factorization.

1974407549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1974407549 is about 44434.3059921048. The cubic root of 1974407549 is about 1254.5238849408.

The spelling of 1974407549 in words is "one billion, nine hundred seventy-four million, four hundred seven thousand, five hundred forty-nine".