1377472141 has 4 divisors (see below), whose sum is σ = 1458499932. Its totient is φ = 1296444352.

The previous prime is 1377472081. The next prime is 1377472153. The reversal of 1377472141 is 1412747731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1135016100 + 242456041 = 33690^2 + 15571^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377472141 - 2¹¹ = 1377470093 is a prime.

It is a super-2 number, since 2×1377472141² = 3794858998462247762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1377472141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377472541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40513870 + ... + 40513903.

It is an arithmetic number, because the mean of its divisors is an integer number (364624983).

Almost surely, 2^1377472141 is an apocalyptic number.

It is an amenable number.

1377472141 is a deficient number, since it is larger than the sum of its proper divisors (81027791).

1377472141 is an equidigital number, since it uses as much as digits as its factorization.

1377472141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81027790.

The product of its digits is 32928, while the sum is 37.

The square root of 1377472141 is about 37114.3118082499. The cubic root of 1377472141 is about 1112.6560696080.

The spelling of 1377472141 in words is "one billion, three hundred seventy-seven million, four hundred seventy-two thousand, one hundred forty-one".