1605198552 has 64 divisors (see below), whose sum is σ = 4047563520. Its totient is φ = 530479488.

The previous prime is 1605198541. The next prime is 1605198559. The reversal of 1605198552 is 2558915061.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605198559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207613 + ... + 2208339.

It is an arithmetic number, because the mean of its divisors is an integer number (63243180).

Almost surely, 2^1605198552 is an apocalyptic number.

1605198552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1605198552 is an abundant number, since it is smaller than the sum of its proper divisors (2442364968).

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

1605198552 is a wasteful number, since it uses less digits than its factorization.

1605198552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 42.

The square root of 1605198552 is about 40064.9292024833. The cubic root of 1605198552 is about 1170.8724473784.

It can be divided in two parts, 160519 and 8552, that added together give a triangular number (169071 = T₅₈₁).

The spelling of 1605198552 in words is "one billion, six hundred five million, one hundred ninety-eight thousand, five hundred fifty-two".