1066451538 has 16 divisors (see below), whose sum is σ = 2133598176. Its totient is φ = 355368000.

The previous prime is 1066451537. The next prime is 1066451563. The reversal of 1066451538 is 8351546601.

It is a super-2 number, since 2×1066451538² = 2274637765805130888, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1066451496 and 1066451505.

It is not an unprimeable number, because it can be changed into a prime (1066451537) 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, 7831 + ... + 46842.

It is an arithmetic number, because the mean of its divisors is an integer number (133349886).

Almost surely, 2^1066451538 is an apocalyptic number.

1066451538 is an abundant number, since it is smaller than the sum of its proper divisors (1067146638).

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

1066451538 is a wasteful number, since it uses less digits than its factorization.

1066451538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57929.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 1066451538 is about 32656.5695993930. The cubic root of 1066451538 is about 1021.6772156037.

The spelling of 1066451538 in words is "one billion, sixty-six million, four hundred fifty-one thousand, five hundred thirty-eight".