1913144084 has 6 divisors (see below), whose sum is σ = 3348002154. Its totient is φ = 956572040.

The previous prime is 1913144081. The next prime is 1913144087. The reversal of 1913144084 is 4804413191.

It is an interprime number because it is at equal distance from previous prime (1913144081) and next prime (1913144087).

It can be written as a sum of positive squares in only one way, i.e., 1646736400 + 266407684 = 40580^2 + 16322^2 .

It is a super-2 number, since 2×1913144084² = 7320240572288398112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913144081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239143007 + ... + 239143014.

It is an arithmetic number, because the mean of its divisors is an integer number (558000359).

Almost surely, 2^1913144084 is an apocalyptic number.

It is an amenable number.

1913144084 is a deficient number, since it is larger than the sum of its proper divisors (1434858070).

1913144084 is a wasteful number, since it uses less digits than its factorization.

1913144084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478286025 (or 478286023 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1913144084 is about 43739.5025577566. The cubic root of 1913144084 is about 1241.4118682453.

The spelling of 1913144084 in words is "one billion, nine hundred thirteen million, one hundred forty-four thousand, eighty-four".