2138155037 has 2 divisors, whose sum is σ = 2138155038. Its totient is φ = 2138155036.

The previous prime is 2138154979. The next prime is 2138155069. The reversal of 2138155037 is 7305518312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027610841 + 110544196 = 45029^2 + 10514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2138155037 - 2¹⁶ = 2138089501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2138154988 and 2138155006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138155087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069077518 + 1069077519.

It is an arithmetic number, because the mean of its divisors is an integer number (1069077519).

Almost surely, 2^2138155037 is an apocalyptic number.

It is an amenable number.

2138155037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138155037 is an equidigital number, since it uses as much as digits as its factorization.

2138155037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 2138155037 is about 46240.1885484910. The cubic root of 2138155037 is about 1288.2883046488.

The spelling of 2138155037 in words is "two billion, one hundred thirty-eight million, one hundred fifty-five thousand, thirty-seven".