1143501645 has 64 divisors (see below), whose sum is σ = 2158700544. Its totient is φ = 509579520.

The previous prime is 1143501607. The next prime is 1143501683. The reversal of 1143501645 is 5461053411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1143501607) and next prime (1143501683).

It is not a de Polignac number, because 1143501645 - 2⁷ = 1143501517 is a prime.

It is a super-3 number, since 3×1143501645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 563122 + ... + 565148.

It is an arithmetic number, because the mean of its divisors is an integer number (33729696).

Almost surely, 2^1143501645 is an apocalyptic number.

1143501645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143501645 is a deficient number, since it is larger than the sum of its proper divisors (1015198899).

1143501645 is a wasteful number, since it uses less digits than its factorization.

1143501645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1143501645 is about 33815.7011608513. The cubic root of 1143501645 is about 1045.7124160805.

The spelling of 1143501645 in words is "one billion, one hundred forty-three million, five hundred one thousand, six hundred forty-five".