1770141997 has 12 divisors (see below), whose sum is σ = 1921988244. Its totient is φ = 1629538560.

The previous prime is 1770141979. The next prime is 1770142001. The reversal of 1770141997 is 7991410771.

It can be written as a sum of positive squares in 6 ways, for example, as 408605796 + 1361536201 = 20214^2 + 36899^2 .

It is not a de Polignac number, because 1770141997 - 2¹¹ = 1770139949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1770141917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48997 + ... + 77077.

It is an arithmetic number, because the mean of its divisors is an integer number (160165687).

Almost surely, 2^1770141997 is an apocalyptic number.

It is an amenable number.

1770141997 is a deficient number, since it is larger than the sum of its proper divisors (151846247).

1770141997 is a wasteful number, since it uses less digits than its factorization.

1770141997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28480 (or 28467 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 46.

The square root of 1770141997 is about 42073.0554749712. The cubic root of 1770141997 is about 1209.6768476566.

The spelling of 1770141997 in words is "one billion, seven hundred seventy million, one hundred forty-one thousand, nine hundred ninety-seven".