1945791229 has 8 divisors (see below), whose sum is σ = 2010229760. Its totient is φ = 1881457200.

The previous prime is 1945791227. The next prime is 1945791233. The reversal of 1945791229 is 9221975491.

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

It is a cyclic number.

It is not a de Polignac number, because 1945791229 - 2¹ = 1945791227 is a prime.

It is a super-2 number, since 2×1945791229² = 7572207013706660882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945791223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12667 + ... + 63655.

It is an arithmetic number, because the mean of its divisors is an integer number (251278720).

Almost surely, 2^1945791229 is an apocalyptic number.

It is an amenable number.

1945791229 is a deficient number, since it is larger than the sum of its proper divisors (64438531).

1945791229 is a wasteful number, since it uses less digits than its factorization.

1945791229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52251.

The product of its digits is 408240, while the sum is 49.

The square root of 1945791229 is about 44111.1236424555. The cubic root of 1945791229 is about 1248.4334998686.

The spelling of 1945791229 in words is "one billion, nine hundred forty-five million, seven hundred ninety-one thousand, two hundred twenty-nine".