7148389111 has 4 divisors (see below), whose sum is σ = 7185815424. Its totient is φ = 7110962800.

The previous prime is 7148389099. The next prime is 7148389139. The reversal of 7148389111 is 1119838417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7148389111 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 (7148380111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18712870 + ... + 18713251.

It is an arithmetic number, because the mean of its divisors is an integer number (1796453856).

Almost surely, 2^7148389111 is an apocalyptic number.

7148389111 is a deficient number, since it is larger than the sum of its proper divisors (37426313).

7148389111 is a wasteful number, since it uses less digits than its factorization.

7148389111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37426312.

The product of its digits is 48384, while the sum is 43.

The square root of 7148389111 is about 84548.1467035204. The cubic root of 7148389111 is about 1926.3538335837.

The spelling of 7148389111 in words is "seven billion, one hundred forty-eight million, three hundred eighty-nine thousand, one hundred eleven".