1972749067 has 4 divisors (see below), whose sum is σ = 1972843560. Its totient is φ = 1972654576.

The previous prime is 1972749059. The next prime is 1972749083. The reversal of 1972749067 is 7609472791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1972749067 - 2³ = 1972749059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972749047) 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, 538 + ... + 62815.

It is an arithmetic number, because the mean of its divisors is an integer number (493210890).

Almost surely, 2^1972749067 is an apocalyptic number.

1972749067 is a deficient number, since it is larger than the sum of its proper divisors (94493).

1972749067 is an equidigital number, since it uses as much as digits as its factorization.

1972749067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94492.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The square root of 1972749067 is about 44415.6398918219. The cubic root of 1972749067 is about 1254.1725241631.

The spelling of 1972749067 in words is "one billion, nine hundred seventy-two million, seven hundred forty-nine thousand, sixty-seven".