1554961489 has 9 divisors (see below), whose sum is σ = 1590645577. Its totient is φ = 1520063284.

The previous prime is 1554961451. The next prime is 1554961511. The reversal of 1554961489 is 9841694551.

The square root of 1554961489 is 39433.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1554961489 - 2⁷ = 1554961361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1554961189) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1852932 + ... + 1853770.

Almost surely, 2^1554961489 is an apocalyptic number.

1554961489 is the 39433-rd square number.

1554961489 is the 19717-th centered octagonal number.

It is an amenable number.

1554961489 is a deficient number, since it is larger than the sum of its proper divisors (35684088).

1554961489 is an frugal number, since it uses more digits than its factorization.

1554961489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772 (or 886 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 52.

The cubic root of 1554961489 is about 1158.5280301451.

The spelling of 1554961489 in words is "one billion, five hundred fifty-four million, nine hundred sixty-one thousand, four hundred eighty-nine".