1655493941 has 4 divisors (see below), whose sum is σ = 1695871884. Its totient is φ = 1615116000.

The previous prime is 1655493907. The next prime is 1655493943. The reversal of 1655493941 is 1493945561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1493945561 = 431 ⋅3466231.

It can be written as a sum of positive squares in 2 ways, for example, as 683613316 + 971880625 = 26146^2 + 31175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655493941 is a prime.

It is a super-2 number, since 2×1655493941² = 5481320377375422962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655493943) 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, 20188910 + ... + 20188991.

It is an arithmetic number, because the mean of its divisors is an integer number (423967971).

Almost surely, 2^1655493941 is an apocalyptic number.

It is an amenable number.

1655493941 is a deficient number, since it is larger than the sum of its proper divisors (40377943).

1655493941 is an equidigital number, since it uses as much as digits as its factorization.

1655493941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40377942.

The product of its digits is 583200, while the sum is 47.

The square root of 1655493941 is about 40687.7615629073. The cubic root of 1655493941 is about 1182.9758130584.

The spelling of 1655493941 in words is "one billion, six hundred fifty-five million, four hundred ninety-three thousand, nine hundred forty-one".