1001963397243 has 16 divisors (see below), whose sum is σ = 1361397436416. Its totient is φ = 655309662240.

The previous prime is 1001963397233. The next prime is 1001963397283. The reversal of 1001963397243 is 3427933691001.

It is not a de Polignac number, because 1001963397243 - 2²⁵ = 1001929842811 is a prime.

It is a super-4 number, since 4×1001963397243⁴ (a number of 49 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001963397192 and 1001963397201.

It is not an unprimeable number, because it can be changed into a prime (1001963397233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7077705 + ... + 7217882.

It is an arithmetic number, because the mean of its divisors is an integer number (85087339776).

Almost surely, 2^{1001963397243} is an apocalyptic number.

1001963397243 is a deficient number, since it is larger than the sum of its proper divisors (359434039173).

1001963397243 is a wasteful number, since it uses less digits than its factorization.

1001963397243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14296034.

The product of its (nonzero) digits is 734832, while the sum is 48.

The spelling of 1001963397243 in words is "one trillion, one billion, nine hundred sixty-three million, three hundred ninety-seven thousand, two hundred forty-three".