1953732749 has 2 divisors, whose sum is σ = 1953732750. Its totient is φ = 1953732748.

The previous prime is 1953732691. The next prime is 1953732757. The reversal of 1953732749 is 9472373591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1927824649 + 25908100 = 43907^2 + 5090^2 .

It is an emirp because it is prime and its reverse (9472373591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1953732749 - 2²⁴ = 1936955533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1953732697 and 1953732706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953732149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976866374 + 976866375.

It is an arithmetic number, because the mean of its divisors is an integer number (976866375).

Almost surely, 2^1953732749 is an apocalyptic number.

It is an amenable number.

1953732749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953732749 is an equidigital number, since it uses as much as digits as its factorization.

1953732749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 50.

The square root of 1953732749 is about 44201.0491843802. The cubic root of 1953732749 is about 1250.1296396744.

The spelling of 1953732749 in words is "one billion, nine hundred fifty-three million, seven hundred thirty-two thousand, seven hundred forty-nine".