748142198649 has 6 divisors (see below), whose sum is σ = 1080649842506. Its totient is φ = 498761465760.

The previous prime is 748142198599. The next prime is 748142198689. The reversal of 748142198649 is 946891241847.

748142198649 is a `hidden beast` number, since 7 + 4 + 81 + 421 + 98 + 6 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 697559040000 + 50583158649 = 835200^2 + 224907^2 .

It is not a de Polignac number, because 748142198649 - 2⁷ = 748142198521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748142198689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41563455472 + ... + 41563455489.

Almost surely, 2^748142198649 is an apocalyptic number.

It is an amenable number.

748142198649 is a deficient number, since it is larger than the sum of its proper divisors (332507643857).

748142198649 is a wasteful number, since it uses less digits than its factorization.

748142198649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83126910967 (or 83126910964 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The spelling of 748142198649 in words is "seven hundred forty-eight billion, one hundred forty-two million, one hundred ninety-eight thousand, six hundred forty-nine".