1352537891 has 4 divisors (see below), whose sum is σ = 1358444400. Its totient is φ = 1346631384.

The previous prime is 1352537863. The next prime is 1352537897. The reversal of 1352537891 is 1987352531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1987352531 = 20347 ⋅97673.

It is a cyclic number.

It is not a de Polignac number, because 1352537891 - 2¹⁴ = 1352521507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1352537897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2952911 + ... + 2953368.

It is an arithmetic number, because the mean of its divisors is an integer number (339611100).

Almost surely, 2^1352537891 is an apocalyptic number.

1352537891 is a deficient number, since it is larger than the sum of its proper divisors (5906509).

1352537891 is an equidigital number, since it uses as much as digits as its factorization.

1352537891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906508.

The product of its digits is 226800, while the sum is 44.

The square root of 1352537891 is about 36776.8662476835. The cubic root of 1352537891 is about 1105.9015842307.

The spelling of 1352537891 in words is "one billion, three hundred fifty-two million, five hundred thirty-seven thousand, eight hundred ninety-one".