1655493340 has 24 divisors (see below), whose sum is σ = 3493021392. Its totient is φ = 659057280.

The previous prime is 1655493317. The next prime is 1655493373. The reversal of 1655493340 is 433945561.

It is a junction number, because it is equal to n+sod(n) for n = 1655493293 and 1655493302.

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, 191929 + ... + 200368.

It is an arithmetic number, because the mean of its divisors is an integer number (145542558).

Almost surely, 2^1655493340 is an apocalyptic number.

1655493340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1655493340 is an abundant number, since it is smaller than the sum of its proper divisors (1837528052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1655493340 is a wasteful number, since it uses less digits than its factorization.

1655493340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392517 (or 392515 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 1655493340 is about 40687.7541773935. The cubic root of 1655493340 is about 1182.9756699050.

The spelling of 1655493340 in words is "one billion, six hundred fifty-five million, four hundred ninety-three thousand, three hundred forty".