1370020545 has 24 divisors (see below), whose sum is σ = 2379889512. Its totient is φ = 729081600.

The previous prime is 1370020529. The next prime is 1370020567. The reversal of 1370020545 is 5450200731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57335184 + 1312685361 = 7572^2 + 36231^2 .

It is not a de Polignac number, because 1370020545 - 2⁴ = 1370020529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12276 + ... + 53765.

It is an arithmetic number, because the mean of its divisors is an integer number (99162063).

Almost surely, 2^1370020545 is an apocalyptic number.

1370020545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1370020545 is a deficient number, since it is larger than the sum of its proper divisors (1009868967).

1370020545 is a wasteful number, since it uses less digits than its factorization.

1370020545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66513 (or 66510 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 1370020545 is about 37013.7885793930. The cubic root of 1370020545 is about 1110.6460933005.

The spelling of 1370020545 in words is "one billion, three hundred seventy million, twenty thousand, five hundred forty-five".