2148254078 has 4 divisors (see below), whose sum is σ = 3222381120. Its totient is φ = 1074127038.

The previous prime is 2148254041. The next prime is 2148254093. The reversal of 2148254078 is 8704528412.

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

It is a super-2 number, since 2×2148254078² = 9229991167287260168, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 537063518 + ... + 537063521.

It is an arithmetic number, because the mean of its divisors is an integer number (805595280).

Almost surely, 2^2148254078 is an apocalyptic number.

2148254078 is a deficient number, since it is larger than the sum of its proper divisors (1074127042).

2148254078 is a wasteful number, since it uses less digits than its factorization.

2148254078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074127041.

The product of its (nonzero) digits is 143360, while the sum is 41.

The square root of 2148254078 is about 46349.2618927206. The cubic root of 2148254078 is about 1290.3134222314.

The spelling of 2148254078 in words is "two billion, one hundred forty-eight million, two hundred fifty-four thousand, seventy-eight".