1545089090 has 32 divisors (see below), whose sum is σ = 2798276976. Its totient is φ = 614246400.

The previous prime is 1545089089. The next prime is 1545089093. The reversal of 1545089090 is 909805451.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1488493561 + 56595529 = 38581^2 + 7523^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1545089093) 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, 1495214 + ... + 1496246.

Almost surely, 2^1545089090 is an apocalyptic number.

1545089090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1545089090 is a deficient number, since it is larger than the sum of its proper divisors (1253187886).

1545089090 is a wasteful number, since it uses less digits than its factorization.

1545089090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 1545089090 is about 39307.6212711988. The cubic root of 1545089090 is about 1156.0710042273.

The spelling of 1545089090 in words is "one billion, five hundred forty-five million, eighty-nine thousand, ninety".