1111640145 has 32 divisors (see below), whose sum is σ = 2217507840. Its totient is φ = 461979840.

The previous prime is 1111640143. The next prime is 1111640147. The reversal of 1111640145 is 5410461111.

It is an interprime number because it is at equal distance from previous prime (1111640143) and next prime (1111640147).

It is not a de Polignac number, because 1111640145 - 2¹ = 1111640143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111640141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480075 + ... + 482384.

It is an arithmetic number, because the mean of its divisors is an integer number (69297120).

Almost surely, 2^1111640145 is an apocalyptic number.

1111640145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111640145 is a deficient number, since it is larger than the sum of its proper divisors (1105867695).

1111640145 is a wasteful number, since it uses less digits than its factorization.

1111640145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962485.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1111640145 is about 33341.2678973071. The cubic root of 1111640145 is about 1035.9085256985.

The spelling of 1111640145 in words is "one billion, one hundred eleven million, six hundred forty thousand, one hundred forty-five".