1001945522 has 4 divisors (see below), whose sum is σ = 1502918286. Its totient is φ = 500972760.

The previous prime is 1001945491. The next prime is 1001945531. The reversal of 1001945522 is 2255491001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 686492401 + 315453121 = 26201^2 + 17761^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250486379 + ... + 250486382.

Almost surely, 2^1001945522 is an apocalyptic number.

1001945522 is a deficient number, since it is larger than the sum of its proper divisors (500972764).

1001945522 is an equidigital number, since it uses as much as digits as its factorization.

1001945522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500972763.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1001945522 is about 31653.5230582632. The cubic root of 1001945522 is about 1000.6480872255.

The spelling of 1001945522 in words is "one billion, one million, nine hundred forty-five thousand, five hundred twenty-two".