1914400625128 has 8 divisors (see below), whose sum is σ = 3589501172130. Its totient is φ = 957200312560.

The previous prime is 1914400625119. The next prime is 1914400625129. The reversal of 1914400625128 is 8215260044191.

It can be written as a sum of positive squares in only one way, i.e., 1301064172164 + 613336452964 = 1140642^2 + 783158^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1914400625128³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1914400625129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119650039063 + ... + 119650039078.

Almost surely, 2^{1914400625128} is an apocalyptic number.

It is an amenable number.

1914400625128 is a deficient number, since it is larger than the sum of its proper divisors (1675100547002).

1914400625128 is a wasteful number, since it uses less digits than its factorization.

1914400625128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239300078147 (or 239300078143 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 1914400625128 in words is "one trillion, nine hundred fourteen billion, four hundred million, six hundred twenty-five thousand, one hundred twenty-eight".