1537398045 has 24 divisors (see below), whose sum is σ = 2675899512. Its totient is φ = 816537600.

The previous prime is 1537398011. The next prime is 1537398061. The reversal of 1537398045 is 5408937351.

1537398045 is a `hidden beast` number, since 1 + 537 + 39 + 80 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 122810724 + 1414587321 = 11082^2 + 37611^2 .

It is not a de Polignac number, because 1537398045 - 2⁸ = 1537397789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60036 + ... + 81725.

It is an arithmetic number, because the mean of its divisors is an integer number (111495813).

Almost surely, 2^1537398045 is an apocalyptic number.

1537398045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1537398045 is a deficient number, since it is larger than the sum of its proper divisors (1138501467).

1537398045 is a wasteful number, since it uses less digits than its factorization.

1537398045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142013 (or 142010 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 1537398045 is about 39209.6677491661. The cubic root of 1537398045 is about 1154.1496073509.

The spelling of 1537398045 in words is "one billion, five hundred thirty-seven million, three hundred ninety-eight thousand, forty-five".