4991276145 has 8 divisors (see below), whose sum is σ = 7986041856. Its totient is φ = 2662013936.

The previous prime is 4991276137. The next prime is 4991276167. The reversal of 4991276145 is 5416721994.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4991276145 - 2³ = 4991276137 is a prime.

It is a super-2 number, since 2×4991276145² = 49825675111292122050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4991276094 and 4991276103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166375857 + ... + 166375886.

It is an arithmetic number, because the mean of its divisors is an integer number (998255232).

Almost surely, 2^4991276145 is an apocalyptic number.

It is an amenable number.

4991276145 is a deficient number, since it is larger than the sum of its proper divisors (2994765711).

4991276145 is a wasteful number, since it uses less digits than its factorization.

4991276145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332751751.

The product of its digits is 544320, while the sum is 48.

The square root of 4991276145 is about 70648.9642174604. The cubic root of 4991276145 is about 1708.9808622398.

The spelling of 4991276145 in words is "four billion, nine hundred ninety-one million, two hundred seventy-six thousand, one hundred forty-five".