154945980 has 192 divisors, whose sum is σ = 556416000. Its totient is φ = 35064576.

The previous prime is 154945979. The next prime is 154945993. The reversal of 154945980 is 89549451.

154945980 is a `hidden beast` number, since 1 + 54 + 9 + 4 + 598 + 0 = 666.

154945980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 676506 + ... + 676734.

It is an arithmetic number, because the mean of its divisors is an integer number (2898000).

Almost surely, 2^154945980 is an apocalyptic number.

154945980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154945980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278208000).

154945980 is an abundant number, since it is smaller than the sum of its proper divisors (401470020).

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

154945980 is a wasteful number, since it uses less digits than its factorization.

154945980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 154945980 is about 12447.7299135224. The cubic root of 154945980 is about 537.1061242773.

The spelling of 154945980 in words is "one hundred fifty-four million, nine hundred forty-five thousand, nine hundred eighty".