1673540437 has 2 divisors, whose sum is σ = 1673540438. Its totient is φ = 1673540436.

The previous prime is 1673540423. The next prime is 1673540443. The reversal of 1673540437 is 7340453761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1467732721 + 205807716 = 38311^2 + 14346^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673540437 - 2¹¹ = 1673538389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1673540437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1673540447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836770218 + 836770219.

It is an arithmetic number, because the mean of its divisors is an integer number (836770219).

Almost surely, 2^1673540437 is an apocalyptic number.

It is an amenable number.

1673540437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673540437 is an equidigital number, since it uses as much as digits as its factorization.

1673540437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 1673540437 is about 40908.9285731123. The cubic root of 1673540437 is about 1187.2588170132.

The spelling of 1673540437 in words is "one billion, six hundred seventy-three million, five hundred forty thousand, four hundred thirty-seven".