4897138749 has 4 divisors (see below), whose sum is σ = 6529518336. Its totient is φ = 3264759164.

The previous prime is 4897138739. The next prime is 4897138783. The reversal of 4897138749 is 9478317984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4897138749 - 2¹⁵ = 4897105981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4897138692 and 4897138701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4897138739) 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, 816189789 + ... + 816189794.

It is an arithmetic number, because the mean of its divisors is an integer number (1632379584).

Almost surely, 2^4897138749 is an apocalyptic number.

It is an amenable number.

4897138749 is a deficient number, since it is larger than the sum of its proper divisors (1632379587).

4897138749 is a wasteful number, since it uses less digits than its factorization.

4897138749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632379586.

The product of its digits is 12192768, while the sum is 60.

The square root of 4897138749 is about 69979.5595084736. The cubic root of 4897138749 is about 1698.1685870090.

The spelling of 4897138749 in words is "four billion, eight hundred ninety-seven million, one hundred thirty-eight thousand, seven hundred forty-nine".