371298891649 has 9 divisors (see below), whose sum is σ = 431924080707. Its totient is φ = 318252536784.

The previous prime is 371298891647. The next prime is 371298891673. The reversal of 371298891649 is 946198892173.

It is a happy number.

The square root of 371298891649 is 609343.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 238394898049 + 132903993600 = 488257^2 + 364560^2 .

It is not a de Polignac number, because 371298891649 - 2¹ = 371298891647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (371298891647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4221877 + ... + 4308925.

It is an arithmetic number, because the mean of its divisors is an integer number (47991564523).

Almost surely, 2^371298891649 is an apocalyptic number.

371298891649 is the 609343-rd square number.

371298891649 is the 304672-nd centered octagonal number.

It is an amenable number.

371298891649 is a deficient number, since it is larger than the sum of its proper divisors (60625189058).

371298891649 is an frugal number, since it uses more digits than its factorization.

371298891649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174112 (or 87056 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 67.

The spelling of 371298891649 in words is "three hundred seventy-one billion, two hundred ninety-eight million, eight hundred ninety-one thousand, six hundred forty-nine".