945605749 has 4 divisors (see below), whose sum is σ = 1031569920. Its totient is φ = 859641580.

The previous prime is 945605723. The next prime is 945605767. The reversal of 945605749 is 947506549.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945605749 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945605789) 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, 42982069 + ... + 42982090.

It is an arithmetic number, because the mean of its divisors is an integer number (257892480).

Almost surely, 2^945605749 is an apocalyptic number.

It is an amenable number.

945605749 is a deficient number, since it is larger than the sum of its proper divisors (85964171).

945605749 is a wasteful number, since it uses less digits than its factorization.

945605749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85964170.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 945605749 is about 30750.7032277312. The cubic root of 945605749 is about 981.5295250064.

The spelling of 945605749 in words is "nine hundred forty-five million, six hundred five thousand, seven hundred forty-nine".