2978748111 has 8 divisors (see below), whose sum is σ = 3972552064. Its totient is φ = 1985388120.

The previous prime is 2978748107. The next prime is 2978748131. The reversal of 2978748111 is 1118478792.

2978748111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2978748111 - 2² = 2978748107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978748131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95005 + ... + 122406.

It is an arithmetic number, because the mean of its divisors is an integer number (496569008).

Almost surely, 2^2978748111 is an apocalyptic number.

2978748111 is a deficient number, since it is larger than the sum of its proper divisors (993803953).

2978748111 is a wasteful number, since it uses less digits than its factorization.

2978748111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221981.

The product of its digits is 225792, while the sum is 48.

The square root of 2978748111 is about 54577.9086352711. The cubic root of 2978748111 is about 1438.8358825627.

The spelling of 2978748111 in words is "two billion, nine hundred seventy-eight million, seven hundred forty-eight thousand, one hundred eleven".