1377435085 has 8 divisors (see below), whose sum is σ = 1780070040. Its totient is φ = 1017182784.

The previous prime is 1377435067. The next prime is 1377435091. The reversal of 1377435085 is 5805347731.

It can be written as a sum of positive squares in 4 ways, for example, as 270076356 + 1107358729 = 16434^2 + 33277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1377435085 - 2⁵ = 1377435053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10595590 + ... + 10595719.

It is an arithmetic number, because the mean of its divisors is an integer number (222508755).

Almost surely, 2^1377435085 is an apocalyptic number.

It is an amenable number.

1377435085 is a deficient number, since it is larger than the sum of its proper divisors (402634955).

1377435085 is a wasteful number, since it uses less digits than its factorization.

1377435085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21191327.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 1377435085 is about 37113.8125904629. The cubic root of 1377435085 is about 1112.6460921641.

The spelling of 1377435085 in words is "one billion, three hundred seventy-seven million, four hundred thirty-five thousand, eighty-five".