1553198770 has 32 divisors (see below), whose sum is σ = 2827535040. Its totient is φ = 614243520.

The previous prime is 1553198753. The next prime is 1553198771. The reversal of 1553198770 is 778913551.

It is a self number, because there is not a number n which added to its sum of digits gives 1553198770.

It is not an unprimeable number, because it can be changed into a prime (1553198771) 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, 612405 + ... + 614935.

It is an arithmetic number, because the mean of its divisors is an integer number (88360470).

Almost surely, 2^1553198770 is an apocalyptic number.

1553198770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1553198770 is a deficient number, since it is larger than the sum of its proper divisors (1274336270).

1553198770 is a wasteful number, since it uses less digits than its factorization.

1553198770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210.

The product of its (nonzero) digits is 264600, while the sum is 46.

The square root of 1553198770 is about 39410.6428518998. The cubic root of 1553198770 is about 1158.0900918549.

The spelling of 1553198770 in words is "one billion, five hundred fifty-three million, one hundred ninety-eight thousand, seven hundred seventy".