213758237749 has 8 divisors (see below), whose sum is σ = 244711309248. Its totient is φ = 182909211360.

The previous prime is 213758237747. The next prime is 213758237783. The reversal of 213758237749 is 947732857312.

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 213758237749 - 2¹ = 213758237747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213758237693 and 213758237702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213758237743) 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, 26006872 + ... + 26015089.

It is an arithmetic number, because the mean of its divisors is an integer number (30588913656).

Almost surely, 2^213758237749 is an apocalyptic number.

It is an amenable number.

213758237749 is a deficient number, since it is larger than the sum of its proper divisors (30953071499).

213758237749 is an equidigital number, since it uses as much as digits as its factorization.

213758237749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52022555.

The product of its digits is 17781120, while the sum is 58.

The spelling of 213758237749 in words is "two hundred thirteen billion, seven hundred fifty-eight million, two hundred thirty-seven thousand, seven hundred forty-nine".