1645337142 has 12 divisors (see below), whose sum is σ = 3564897180. Its totient is φ = 548445708.

The previous prime is 1645337107. The next prime is 1645337147. The reversal of 1645337142 is 2417335461.

1645337142 is a `hidden beast` number, since 1 + 645 + 3 + 3 + 7 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1645337097 and 1645337106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645337147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45703792 + ... + 45703827.

It is an arithmetic number, because the mean of its divisors is an integer number (297074765).

Almost surely, 2^1645337142 is an apocalyptic number.

1645337142 is an abundant number, since it is smaller than the sum of its proper divisors (1919560038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645337142 is a wasteful number, since it uses less digits than its factorization.

1645337142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91407627 (or 91407624 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 1645337142 is about 40562.7556016600. The cubic root of 1645337142 is about 1180.5515811587.

The spelling of 1645337142 in words is "one billion, six hundred forty-five million, three hundred thirty-seven thousand, one hundred forty-two".