1066545426 has 32 divisors (see below), whose sum is σ = 2192433408. Its totient is φ = 345698640.

The previous prime is 1066545413. The next prime is 1066545437. The reversal of 1066545426 is 6245456601.

It is a super-2 number, since 2×1066545426² = 2275038291443042952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49461 + ... + 67671.

It is an arithmetic number, because the mean of its divisors is an integer number (68513544).

Almost surely, 2^1066545426 is an apocalyptic number.

1066545426 is an abundant number, since it is smaller than the sum of its proper divisors (1125887982).

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

1066545426 is a wasteful number, since it uses less digits than its factorization.

1066545426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18486.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 1066545426 is about 32658.0070733044. The cubic root of 1066545426 is about 1021.7071967803.

The spelling of 1066545426 in words is "one billion, sixty-six million, five hundred forty-five thousand, four hundred twenty-six".