1145879890 has 32 divisors (see below), whose sum is σ = 2131675056. Its totient is φ = 443197440.

The previous prime is 1145879857. The next prime is 1145879893. The reversal of 1145879890 is 989785411.

1145879890 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 34257609 + 1111622281 = 5853^2 + 33341^2 .

It is not an unprimeable number, because it can be changed into a prime (1145879893) 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, 33964 + ... + 58696.

Almost surely, 2^1145879890 is an apocalyptic number.

1145879890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145879890 is a deficient number, since it is larger than the sum of its proper divisors (985795166).

1145879890 is a wasteful number, since it uses less digits than its factorization.

1145879890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894.

The product of its (nonzero) digits is 725760, while the sum is 52.

The square root of 1145879890 is about 33850.8476998730. The cubic root of 1145879890 is about 1046.4368686733.

The spelling of 1145879890 in words is "one billion, one hundred forty-five million, eight hundred seventy-nine thousand, eight hundred ninety".