143694945 has 16 divisors (see below), whose sum is σ = 255457920. Its totient is φ = 76637232.

The previous prime is 143694937. The next prime is 143694953. The reversal of 143694945 is 549496341.

It is an interprime number because it is at equal distance from previous prime (143694937) and next prime (143694953).

It is not a de Polignac number, because 143694945 - 2³ = 143694937 is a prime.

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

It is an alternating number because its digits alternate between odd and even.

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 143694945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532069 + ... + 532338.

It is an arithmetic number, because the mean of its divisors is an integer number (15966120).

Almost surely, 2^143694945 is an apocalyptic number.

143694945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

143694945 is a deficient number, since it is larger than the sum of its proper divisors (111762975).

143694945 is a wasteful number, since it uses less digits than its factorization.

143694945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064421 (or 1064415 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 143694945 is about 11987.2826361941. The cubic root of 143694945 is about 523.7778920483. Note that the first 3 decimals are identical.

The spelling of 143694945 in words is "one hundred forty-three million, six hundred ninety-four thousand, nine hundred forty-five".