1090768545 has 16 divisors (see below), whose sum is σ = 1939144320. Its totient is φ = 581743152.

The previous prime is 1090768543. The next prime is 1090768571. The reversal of 1090768545 is 5458670901.

1090768545 is a `hidden beast` number, since 10 + 90 + 7 + 6 + 8 + 545 = 666.

It is not a de Polignac number, because 1090768545 - 2¹ = 1090768543 is a prime.

It is a super-2 number, since 2×1090768545² = 2379552037522834050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1090768545.

It is not an unprimeable number, because it can be changed into a prime (1090768543) 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, 4039749 + ... + 4040018.

It is an arithmetic number, because the mean of its divisors is an integer number (121196520).

Almost surely, 2^1090768545 is an apocalyptic number.

1090768545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1090768545 is a deficient number, since it is larger than the sum of its proper divisors (848375775).

1090768545 is an equidigital number, since it uses as much as digits as its factorization.

1090768545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079781 (or 8079775 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1090768545 is about 33026.7852659020. The cubic root of 1090768545 is about 1029.3842881236.

The spelling of 1090768545 in words is "one billion, ninety million, seven hundred sixty-eight thousand, five hundred forty-five".