2154745039 has 2 divisors, whose sum is σ = 2154745040. Its totient is φ = 2154745038.

The previous prime is 2154745013. The next prime is 2154745081. The reversal of 2154745039 is 9305474512.

It is a happy number.

2154745039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154745039 - 2¹¹ = 2154742991 is a prime.

It is a super-2 number, since 2×2154745039² = 9285852366190223042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2154744992 and 2154745010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154745139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077372519 + 1077372520.

It is an arithmetic number, because the mean of its divisors is an integer number (1077372520).

Almost surely, 2^2154745039 is an apocalyptic number.

2154745039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154745039 is an equidigital number, since it uses as much as digits as its factorization.

2154745039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2154745039 is about 46419.2313486555. The cubic root of 2154745039 is about 1291.6116784768.

It can be divided in two parts, 215474503 and 9, that added together give a palindrome (215474512).

The spelling of 2154745039 in words is "two billion, one hundred fifty-four million, seven hundred forty-five thousand, thirty-nine".