1358643243 has 8 divisors (see below), whose sum is σ = 1873990800. Its totient is φ = 874528928.

The previous prime is 1358643211. The next prime is 1358643257. The reversal of 1358643243 is 3423468531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1358643243 - 2⁵ = 1358643211 is a prime.

It is a super-2 number, since 2×1358643243² = 3691822923499114098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1358643263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7808208 + ... + 7808381.

It is an arithmetic number, because the mean of its divisors is an integer number (234248850).

Almost surely, 2^1358643243 is an apocalyptic number.

1358643243 is a deficient number, since it is larger than the sum of its proper divisors (515347557).

1358643243 is a wasteful number, since it uses less digits than its factorization.

1358643243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15616621.

The product of its digits is 207360, while the sum is 39.

The square root of 1358643243 is about 36859.7781192454. The cubic root of 1358643243 is about 1107.5630988581.

The spelling of 1358643243 in words is "one billion, three hundred fifty-eight million, six hundred forty-three thousand, two hundred forty-three".