1633145545 has 16 divisors (see below), whose sum is σ = 2078211600. Its totient is φ = 1227792384.

The previous prime is 1633145543. The next prime is 1633145587. The reversal of 1633145545 is 5455413361.

It can be written as a sum of positive squares in 8 ways, for example, as 52606009 + 1580539536 = 7253^2 + 39756^2 .

It is a cyclic number.

It is not a de Polignac number, because 1633145545 - 2¹ = 1633145543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1633145543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42931 + ... + 71479.

It is an arithmetic number, because the mean of its divisors is an integer number (129888225).

Almost surely, 2^1633145545 is an apocalyptic number.

It is an amenable number.

1633145545 is a deficient number, since it is larger than the sum of its proper divisors (445066055).

1633145545 is a wasteful number, since it uses less digits than its factorization.

1633145545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29244.

The product of its digits is 108000, while the sum is 37.

The square root of 1633145545 is about 40412.1954983888. The cubic root of 1633145545 is about 1177.6284709486.

The spelling of 1633145545 in words is "one billion, six hundred thirty-three million, one hundred forty-five thousand, five hundred forty-five".