1537053673 has 4 divisors (see below), whose sum is σ = 1537135488. Its totient is φ = 1536971860.

The previous prime is 1537053671. The next prime is 1537053703. The reversal of 1537053673 is 3763507351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3763507351 = 271 ⋅13887481.

It is a cyclic number.

It is not a de Polignac number, because 1537053673 - 2¹ = 1537053671 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1537053671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2940 + ... + 55522.

It is an arithmetic number, because the mean of its divisors is an integer number (384283872).

Almost surely, 2^1537053673 is an apocalyptic number.

It is an amenable number.

1537053673 is a deficient number, since it is larger than the sum of its proper divisors (81815).

1537053673 is an equidigital number, since it uses as much as digits as its factorization.

1537053673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81814.

The product of its (nonzero) digits is 198450, while the sum is 40.

The square root of 1537053673 is about 39205.2760862617. The cubic root of 1537053673 is about 1154.0634257036.

The spelling of 1537053673 in words is "one billion, five hundred thirty-seven million, fifty-three thousand, six hundred seventy-three".