1897546749 has 32 divisors (see below), whose sum is σ = 3077243136. Its totient is φ = 1015311360.

The previous prime is 1897546727. The next prime is 1897546769. The reversal of 1897546749 is 9476457981.

It is not a de Polignac number, because 1897546749 - 2¹⁹ = 1897022461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1897546692 and 1897546701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897546769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56839 + ... + 83819.

It is an arithmetic number, because the mean of its divisors is an integer number (96163848).

Almost surely, 2^1897546749 is an apocalyptic number.

It is an amenable number.

1897546749 is a deficient number, since it is larger than the sum of its proper divisors (1179696387).

1897546749 is a wasteful number, since it uses less digits than its factorization.

1897546749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27205.

The product of its digits is 15240960, while the sum is 60.

The square root of 1897546749 is about 43560.8396268942. The cubic root of 1897546749 is about 1238.0290291092.

The spelling of 1897546749 in words is "one billion, eight hundred ninety-seven million, five hundred forty-six thousand, seven hundred forty-nine".