1551163488 has 48 divisors (see below), whose sum is σ = 4653492480. Its totient is φ = 443189376.

The previous prime is 1551163463. The next prime is 1551163501. The reversal of 1551163488 is 8843611551.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1551163488² = 4812216333008652288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153468 + ... + 1154811.

It is an arithmetic number, because the mean of its divisors is an integer number (96947760).

Almost surely, 2^1551163488 is an apocalyptic number.

It is an amenable number.

1551163488 is an abundant number, since it is smaller than the sum of its proper divisors (3102328992).

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

1551163488 is a wasteful number, since it uses less digits than its factorization.

1551163488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308299 (or 2308291 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 1551163488 is about 39384.8129105624. The cubic root of 1551163488 is about 1157.5840243650.

The spelling of 1551163488 in words is "one billion, five hundred fifty-one million, one hundred sixty-three thousand, four hundred eighty-eight".