1442357645 has 8 divisors (see below), whose sum is σ = 1738388760. Its totient is φ = 1148846400.

The previous prime is 1442357633. The next prime is 1442357671. The reversal of 1442357645 is 5467532441.

It can be written as a sum of positive squares in 4 ways, for example, as 403326889 + 1039030756 = 20083^2 + 32234^2 .

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

It is not a de Polignac number, because 1442357645 - 2⁴ = 1442357629 is a prime.

It is a super-3 number, since 3×1442357645³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628706 + ... + 630995.

It is an arithmetic number, because the mean of its divisors is an integer number (217298595).

Almost surely, 2^1442357645 is an apocalyptic number.

It is an amenable number.

1442357645 is a deficient number, since it is larger than the sum of its proper divisors (296031115).

1442357645 is a wasteful number, since it uses less digits than its factorization.

1442357645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259935.

The product of its digits is 403200, while the sum is 41.

The square root of 1442357645 is about 37978.3839176972. The cubic root of 1442357645 is about 1129.8591844264.

The spelling of 1442357645 in words is "one billion, four hundred forty-two million, three hundred fifty-seven thousand, six hundred forty-five".