1143654645 has 64 divisors (see below), whose sum is σ = 2241331200. Its totient is φ = 486528768.

The previous prime is 1143654641. The next prime is 1143654649. The reversal of 1143654645 is 5464563411.

It is an interprime number because it is at equal distance from previous prime (1143654641) and next prime (1143654649).

It is not a de Polignac number, because 1143654645 - 2² = 1143654641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143654641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82956 + ... + 95754.

It is an arithmetic number, because the mean of its divisors is an integer number (35020800).

Almost surely, 2^1143654645 is an apocalyptic number.

1143654645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143654645 is a deficient number, since it is larger than the sum of its proper divisors (1097676555).

1143654645 is a wasteful number, since it uses less digits than its factorization.

1143654645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12874.

The product of its digits is 172800, while the sum is 39.

The square root of 1143654645 is about 33817.9633479014. The cubic root of 1143654645 is about 1045.7590526158.

The spelling of 1143654645 in words is "one billion, one hundred forty-three million, six hundred fifty-four thousand, six hundred forty-five".