1045540661 has 8 divisors (see below), whose sum is σ = 1146381984. Its totient is φ = 945664720.

The previous prime is 1045540651. The next prime is 1045540669. The reversal of 1045540661 is 1660455401.

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

It is not a de Polignac number, because 1045540661 - 2¹⁰ = 1045539637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045540669) 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, 239075 + ... + 243408.

It is an arithmetic number, because the mean of its divisors is an integer number (143297748).

Almost surely, 2^1045540661 is an apocalyptic number.

1045540661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045540661 is a deficient number, since it is larger than the sum of its proper divisors (100841323).

1045540661 is a wasteful number, since it uses less digits than its factorization.

1045540661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482691.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1045540661 is about 32334.8211839806. The cubic root of 1045540661 is about 1014.9554401398.

The spelling of 1045540661 in words is "one billion, forty-five million, five hundred forty thousand, six hundred sixty-one".