1972749774 has 8 divisors (see below), whose sum is σ = 3945499560. Its totient is φ = 657583256.

The previous prime is 1972749773. The next prime is 1972749799. The reversal of 1972749774 is 4779472791.

It is a sphenic number, since it is the product of 3 distinct primes.

1972749774 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972749773) 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, 164395809 + ... + 164395820.

It is an arithmetic number, because the mean of its divisors is an integer number (493187445).

Almost surely, 2^1972749774 is an apocalyptic number.

1972749774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1972749774 is a wasteful number, since it uses less digits than its factorization.

1972749774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328791634.

The product of its digits is 6223392, while the sum is 57.

The square root of 1972749774 is about 44415.6478507294. The cubic root of 1972749774 is about 1254.1726739878.

The spelling of 1972749774 in words is "one billion, nine hundred seventy-two million, seven hundred forty-nine thousand, seven hundred seventy-four".